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Finding the Fourth Proportional to 754.30, 1,041.15 and 459.71

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Solution

The fourth proportional to 754.30, 1,041.15 and 459.71 is: 634.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.30 : 1,041.15 = 459.71 : x
  2. Step 2: Convert to fraction form
    754.30/1,041.15 = 459.71/x
  3. Step 3: Cross multiply
    754.30x = 1,041.15 × 459.71
  4. Step 4: Simplify right side
    754.30x = 478,627.49
  5. Step 5: Solve for x
    x = 478,627.49/754.30
  6. Step 6: Final answer
    x = 634.54

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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.