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Finding the Fourth Proportional to 895.23, 1,236.78 and 716.16

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Solution

The fourth proportional to 895.23, 1,236.78 and 716.16 is: 989.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.23 : 1,236.78 = 716.16 : x
  2. Step 2: Convert to fraction form
    895.23/1,236.78 = 716.16/x
  3. Step 3: Cross multiply
    895.23x = 1,236.78 × 716.16
  4. Step 4: Simplify right side
    895.23x = 885,732.36
  5. Step 5: Solve for x
    x = 885,732.36/895.23
  6. Step 6: Final answer
    x = 989.39

Related Problems

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Half scale
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Double scale
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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.