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Finding the Fourth Proportional to 1,625.97, 2,439.19 and 471.57

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Solution

The fourth proportional to 1,625.97, 2,439.19 and 471.57 is: 707.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,625.97 : 2,439.19 = 471.57 : x
  2. Step 2: Convert to fraction form
    1,625.97/2,439.19 = 471.57/x
  3. Step 3: Cross multiply
    1,625.97x = 2,439.19 × 471.57
  4. Step 4: Simplify right side
    1,625.97x = 1,150,248.83
  5. Step 5: Solve for x
    x = 1,150,248.83/1,625.97
  6. Step 6: Final answer
    x = 707.42

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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.