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Finding the Fourth Proportional to 269.74, 372.46 and 256.15

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Solution

The fourth proportional to 269.74, 372.46 and 256.15 is: 353.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.74 : 372.46 = 256.15 : x
  2. Step 2: Convert to fraction form
    269.74/372.46 = 256.15/x
  3. Step 3: Cross multiply
    269.74x = 372.46 × 256.15
  4. Step 4: Simplify right side
    269.74x = 95,405.63
  5. Step 5: Solve for x
    x = 95,405.63/269.74
  6. Step 6: Final answer
    x = 353.69

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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.