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Finding the Fourth Proportional to 982.74, 1,347.03 and 969.07

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Solution

The fourth proportional to 982.74, 1,347.03 and 969.07 is: 1,328.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.74 : 1,347.03 = 969.07 : x
  2. Step 2: Convert to fraction form
    982.74/1,347.03 = 969.07/x
  3. Step 3: Cross multiply
    982.74x = 1,347.03 × 969.07
  4. Step 4: Simplify right side
    982.74x = 1,305,368.05
  5. Step 5: Solve for x
    x = 1,305,368.05/982.74
  6. Step 6: Final answer
    x = 1,328.29

Related Problems

Find fourth proportional to 491.37, 673.52 and 484.54
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.