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Finding the Fourth Proportional to 372.89, 559.31 and 177.81

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Solution

The fourth proportional to 372.89, 559.31 and 177.81 is: 266.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.89 : 559.31 = 177.81 : x
  2. Step 2: Convert to fraction form
    372.89/559.31 = 177.81/x
  3. Step 3: Cross multiply
    372.89x = 559.31 × 177.81
  4. Step 4: Simplify right side
    372.89x = 99,450.91
  5. Step 5: Solve for x
    x = 99,450.91/372.89
  6. Step 6: Final answer
    x = 266.70

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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.