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Finding the Fourth Proportional to 372.50, 559.38 and 242.72

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Solution

The fourth proportional to 372.50, 559.38 and 242.72 is: 364.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.50 : 559.38 = 242.72 : x
  2. Step 2: Convert to fraction form
    372.50/559.38 = 242.72/x
  3. Step 3: Cross multiply
    372.50x = 559.38 × 242.72
  4. Step 4: Simplify right side
    372.50x = 135,772.71
  5. Step 5: Solve for x
    x = 135,772.71/372.50
  6. Step 6: Final answer
    x = 364.49

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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.