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Finding the Fourth Proportional to 1,248.90, 1,873.63 and 371.38

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Solution

The fourth proportional to 1,248.90, 1,873.63 and 371.38 is: 557.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.90 : 1,873.63 = 371.38 : x
  2. Step 2: Convert to fraction form
    1,248.90/1,873.63 = 371.38/x
  3. Step 3: Cross multiply
    1,248.90x = 1,873.63 × 371.38
  4. Step 4: Simplify right side
    1,248.90x = 695,824.49
  5. Step 5: Solve for x
    x = 695,824.49/1,248.90
  6. Step 6: Final answer
    x = 557.15

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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.