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Finding the Fourth Proportional to 610.05, 915.99 and 487.95

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Solution

The fourth proportional to 610.05, 915.99 and 487.95 is: 732.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.05 : 915.99 = 487.95 : x
  2. Step 2: Convert to fraction form
    610.05/915.99 = 487.95/x
  3. Step 3: Cross multiply
    610.05x = 915.99 × 487.95
  4. Step 4: Simplify right side
    610.05x = 446,957.32
  5. Step 5: Solve for x
    x = 446,957.32/610.05
  6. Step 6: Final answer
    x = 732.66

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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.