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Finding the Fourth Proportional to 938.28, 1,294.26 and 606.18

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Solution

The fourth proportional to 938.28, 1,294.26 and 606.18 is: 836.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    938.28 : 1,294.26 = 606.18 : x
  2. Step 2: Convert to fraction form
    938.28/1,294.26 = 606.18/x
  3. Step 3: Cross multiply
    938.28x = 1,294.26 × 606.18
  4. Step 4: Simplify right side
    938.28x = 784,554.53
  5. Step 5: Solve for x
    x = 784,554.53/938.28
  6. Step 6: Final answer
    x = 836.16

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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.