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Finding the Fourth Proportional to 269.86, 372.58 and 207.58

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Solution

The fourth proportional to 269.86, 372.58 and 207.58 is: 286.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.86 : 372.58 = 207.58 : x
  2. Step 2: Convert to fraction form
    269.86/372.58 = 207.58/x
  3. Step 3: Cross multiply
    269.86x = 372.58 × 207.58
  4. Step 4: Simplify right side
    269.86x = 77,340.16
  5. Step 5: Solve for x
    x = 77,340.16/269.86
  6. Step 6: Final answer
    x = 286.59

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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.