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Finding the Fourth Proportional to 1,251.84, 1,725.53 and 1,002.77

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Solution

The fourth proportional to 1,251.84, 1,725.53 and 1,002.77 is: 1,382.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.84 : 1,725.53 = 1,002.77 : x
  2. Step 2: Convert to fraction form
    1,251.84/1,725.53 = 1,002.77/x
  3. Step 3: Cross multiply
    1,251.84x = 1,725.53 × 1,002.77
  4. Step 4: Simplify right side
    1,251.84x = 1,730,296.08
  5. Step 5: Solve for x
    x = 1,730,296.08/1,251.84
  6. Step 6: Final answer
    x = 1,382.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.