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Finding the Fourth Proportional to 611.27, 915.38 and 473.16

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Solution

The fourth proportional to 611.27, 915.38 and 473.16 is: 708.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.27 : 915.38 = 473.16 : x
  2. Step 2: Convert to fraction form
    611.27/915.38 = 473.16/x
  3. Step 3: Cross multiply
    611.27x = 915.38 × 473.16
  4. Step 4: Simplify right side
    611.27x = 433,121.20
  5. Step 5: Solve for x
    x = 433,121.20/611.27
  6. Step 6: Final answer
    x = 708.56

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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.