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Finding the Fourth Proportional to 983.89, 1,358.33 and 652.77

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Solution

The fourth proportional to 983.89, 1,358.33 and 652.77 is: 901.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.89 : 1,358.33 = 652.77 : x
  2. Step 2: Convert to fraction form
    983.89/1,358.33 = 652.77/x
  3. Step 3: Cross multiply
    983.89x = 1,358.33 × 652.77
  4. Step 4: Simplify right side
    983.89x = 886,670.28
  5. Step 5: Solve for x
    x = 886,670.28/983.89
  6. Step 6: Final answer
    x = 901.19

Related Problems

Find fourth proportional to 491.94, 679.17 and 326.38
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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.