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Finding the Fourth Proportional to 462.55, 694.43 and 325.66

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Solution

The fourth proportional to 462.55, 694.43 and 325.66 is: 488.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.55 : 694.43 = 325.66 : x
  2. Step 2: Convert to fraction form
    462.55/694.43 = 325.66/x
  3. Step 3: Cross multiply
    462.55x = 694.43 × 325.66
  4. Step 4: Simplify right side
    462.55x = 226,142.97
  5. Step 5: Solve for x
    x = 226,142.97/462.55
  6. Step 6: Final answer
    x = 488.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.