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Finding the Fourth Proportional to 754.72, 1,041.63 and 459.97

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Solution

The fourth proportional to 754.72, 1,041.63 and 459.97 is: 634.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.72 : 1,041.63 = 459.97 : x
  2. Step 2: Convert to fraction form
    754.72/1,041.63 = 459.97/x
  3. Step 3: Cross multiply
    754.72x = 1,041.63 × 459.97
  4. Step 4: Simplify right side
    754.72x = 479,116.64
  5. Step 5: Solve for x
    x = 479,116.64/754.72
  6. Step 6: Final answer
    x = 634.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.