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Finding the Fourth Proportional to 611.29, 914.80 and 500.32

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Solution

The fourth proportional to 611.29, 914.80 and 500.32 is: 748.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.29 : 914.80 = 500.32 : x
  2. Step 2: Convert to fraction form
    611.29/914.80 = 500.32/x
  3. Step 3: Cross multiply
    611.29x = 914.80 × 500.32
  4. Step 4: Simplify right side
    611.29x = 457,685.66
  5. Step 5: Solve for x
    x = 457,685.66/611.29
  6. Step 6: Final answer
    x = 748.73

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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.