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Finding the Fourth Proportional to 415.19, 572.95 and 249.50

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Solution

The fourth proportional to 415.19, 572.95 and 249.50 is: 344.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.19 : 572.95 = 249.50 : x
  2. Step 2: Convert to fraction form
    415.19/572.95 = 249.50/x
  3. Step 3: Cross multiply
    415.19x = 572.95 × 249.50
  4. Step 4: Simplify right side
    415.19x = 142,950.08
  5. Step 5: Solve for x
    x = 142,950.08/415.19
  6. Step 6: Final answer
    x = 344.30

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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.