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Finding the Fourth Proportional to 1,257.52, 1,884.90 and 527.56

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Solution

The fourth proportional to 1,257.52, 1,884.90 and 527.56 is: 790.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.52 : 1,884.90 = 527.56 : x
  2. Step 2: Convert to fraction form
    1,257.52/1,884.90 = 527.56/x
  3. Step 3: Cross multiply
    1,257.52x = 1,884.90 × 527.56
  4. Step 4: Simplify right side
    1,257.52x = 994,397.84
  5. Step 5: Solve for x
    x = 994,397.84/1,257.52
  6. Step 6: Final answer
    x = 790.76

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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.