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Finding the Fourth Proportional to 269.98, 372.33 and 228.64

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Solution

The fourth proportional to 269.98, 372.33 and 228.64 is: 315.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.98 : 372.33 = 228.64 : x
  2. Step 2: Convert to fraction form
    269.98/372.33 = 228.64/x
  3. Step 3: Cross multiply
    269.98x = 372.33 × 228.64
  4. Step 4: Simplify right side
    269.98x = 85,129.53
  5. Step 5: Solve for x
    x = 85,129.53/269.98
  6. Step 6: Final answer
    x = 315.32

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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.