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Finding the Fourth Proportional to 1,248.48, 1,873.11 and 426.76

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Solution

The fourth proportional to 1,248.48, 1,873.11 and 426.76 is: 640.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.48 : 1,873.11 = 426.76 : x
  2. Step 2: Convert to fraction form
    1,248.48/1,873.11 = 426.76/x
  3. Step 3: Cross multiply
    1,248.48x = 1,873.11 × 426.76
  4. Step 4: Simplify right side
    1,248.48x = 799,365.34
  5. Step 5: Solve for x
    x = 799,365.34/1,248.48
  6. Step 6: Final answer
    x = 640.27

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.