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Finding the Fourth Proportional to 269.80, 372.45 and 176.55

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Solution

The fourth proportional to 269.80, 372.45 and 176.55 is: 243.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.80 : 372.45 = 176.55 : x
  2. Step 2: Convert to fraction form
    269.80/372.45 = 176.55/x
  3. Step 3: Cross multiply
    269.80x = 372.45 × 176.55
  4. Step 4: Simplify right side
    269.80x = 65,756.98
  5. Step 5: Solve for x
    x = 65,756.98/269.80
  6. Step 6: Final answer
    x = 243.72

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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.