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Finding the Fourth Proportional to 462.42, 636.30 and 338.04

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Solution

The fourth proportional to 462.42, 636.30 and 338.04 is: 465.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.42 : 636.30 = 338.04 : x
  2. Step 2: Convert to fraction form
    462.42/636.30 = 338.04/x
  3. Step 3: Cross multiply
    462.42x = 636.30 × 338.04
  4. Step 4: Simplify right side
    462.42x = 215,094.85
  5. Step 5: Solve for x
    x = 215,094.85/462.42
  6. Step 6: Final answer
    x = 465.15

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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.