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Finding the Fourth Proportional to 1,248.72, 1,873.02 and 382.92

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Solution

The fourth proportional to 1,248.72, 1,873.02 and 382.92 is: 574.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.72 : 1,873.02 = 382.92 : x
  2. Step 2: Convert to fraction form
    1,248.72/1,873.02 = 382.92/x
  3. Step 3: Cross multiply
    1,248.72x = 1,873.02 × 382.92
  4. Step 4: Simplify right side
    1,248.72x = 717,216.82
  5. Step 5: Solve for x
    x = 717,216.82/1,248.72
  6. Step 6: Final answer
    x = 574.36

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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.