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Finding the Fourth Proportional to 1,253.76, 1,875.76 and 734.18

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Solution

The fourth proportional to 1,253.76, 1,875.76 and 734.18 is: 1,098.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253.76 : 1,875.76 = 734.18 : x
  2. Step 2: Convert to fraction form
    1,253.76/1,875.76 = 734.18/x
  3. Step 3: Cross multiply
    1,253.76x = 1,875.76 × 734.18
  4. Step 4: Simplify right side
    1,253.76x = 1,377,145.48
  5. Step 5: Solve for x
    x = 1,377,145.48/1,253.76
  6. Step 6: Final answer
    x = 1,098.41

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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.