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Finding the Fourth Proportional to 610.33, 915.99 and 317.92

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Solution

The fourth proportional to 610.33, 915.99 and 317.92 is: 477.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.33 : 915.99 = 317.92 : x
  2. Step 2: Convert to fraction form
    610.33/915.99 = 317.92/x
  3. Step 3: Cross multiply
    610.33x = 915.99 × 317.92
  4. Step 4: Simplify right side
    610.33x = 291,212.29
  5. Step 5: Solve for x
    x = 291,212.29/610.33
  6. Step 6: Final answer
    x = 477.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.