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Finding the Fourth Proportional to 611.46, 915.06 and 500.49

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Solution

The fourth proportional to 611.46, 915.06 and 500.49 is: 748.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.46 : 915.06 = 500.49 : x
  2. Step 2: Convert to fraction form
    611.46/915.06 = 500.49/x
  3. Step 3: Cross multiply
    611.46x = 915.06 × 500.49
  4. Step 4: Simplify right side
    611.46x = 457,975.88
  5. Step 5: Solve for x
    x = 457,975.88/611.46
  6. Step 6: Final answer
    x = 748.99

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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.