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Finding the Fourth Proportional to 1,250.85, 1,877.21 and 471.62

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Solution

The fourth proportional to 1,250.85, 1,877.21 and 471.62 is: 707.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,250.85 : 1,877.21 = 471.62 : x
  2. Step 2: Convert to fraction form
    1,250.85/1,877.21 = 471.62/x
  3. Step 3: Cross multiply
    1,250.85x = 1,877.21 × 471.62
  4. Step 4: Simplify right side
    1,250.85x = 885,329.78
  5. Step 5: Solve for x
    x = 885,329.78/1,250.85
  6. Step 6: Final answer
    x = 707.78

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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.