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Finding the Fourth Proportional to 312.54, 466.17 and 268.70

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Solution

The fourth proportional to 312.54, 466.17 and 268.70 is: 400.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    312.54 : 466.17 = 268.70 : x
  2. Step 2: Convert to fraction form
    312.54/466.17 = 268.70/x
  3. Step 3: Cross multiply
    312.54x = 466.17 × 268.70
  4. Step 4: Simplify right side
    312.54x = 125,257.55
  5. Step 5: Solve for x
    x = 125,257.55/312.54
  6. Step 6: Final answer
    x = 400.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.