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Finding the Fourth Proportional to 1,251.47, 1,877.09 and 471.44

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Solution

The fourth proportional to 1,251.47, 1,877.09 and 471.44 is: 707.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.47 : 1,877.09 = 471.44 : x
  2. Step 2: Convert to fraction form
    1,251.47/1,877.09 = 471.44/x
  3. Step 3: Cross multiply
    1,251.47x = 1,877.09 × 471.44
  4. Step 4: Simplify right side
    1,251.47x = 884,935.31
  5. Step 5: Solve for x
    x = 884,935.31/1,251.47
  6. Step 6: Final answer
    x = 707.12

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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.