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Finding the Fourth Proportional to 610.17, 915.25 and 147.95

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Solution

The fourth proportional to 610.17, 915.25 and 147.95 is: 221.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.17 : 915.25 = 147.95 : x
  2. Step 2: Convert to fraction form
    610.17/915.25 = 147.95/x
  3. Step 3: Cross multiply
    610.17x = 915.25 × 147.95
  4. Step 4: Simplify right side
    610.17x = 135,410.38
  5. Step 5: Solve for x
    x = 135,410.38/610.17
  6. Step 6: Final answer
    x = 221.92

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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.