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Finding the Fourth Proportional to 1,250.47, 1,726.05 and 877.78

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Solution

The fourth proportional to 1,250.47, 1,726.05 and 877.78 is: 1,211.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,250.47 : 1,726.05 = 877.78 : x
  2. Step 2: Convert to fraction form
    1,250.47/1,726.05 = 877.78/x
  3. Step 3: Cross multiply
    1,250.47x = 1,726.05 × 877.78
  4. Step 4: Simplify right side
    1,250.47x = 1,515,092.17
  5. Step 5: Solve for x
    x = 1,515,092.17/1,250.47
  6. Step 6: Final answer
    x = 1,211.62

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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.