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Finding the Fourth Proportional to 1,251.67, 1,877.60 and 374.11

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Solution

The fourth proportional to 1,251.67, 1,877.60 and 374.11 is: 561.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.67 : 1,877.60 = 374.11 : x
  2. Step 2: Convert to fraction form
    1,251.67/1,877.60 = 374.11/x
  3. Step 3: Cross multiply
    1,251.67x = 1,877.60 × 374.11
  4. Step 4: Simplify right side
    1,251.67x = 702,419.55
  5. Step 5: Solve for x
    x = 702,419.55/1,251.67
  6. Step 6: Final answer
    x = 561.18

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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.