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Finding the Fourth Proportional to 462.66, 638.24 and 412.18

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Solution

The fourth proportional to 462.66, 638.24 and 412.18 is: 568.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.66 : 638.24 = 412.18 : x
  2. Step 2: Convert to fraction form
    462.66/638.24 = 412.18/x
  3. Step 3: Cross multiply
    462.66x = 638.24 × 412.18
  4. Step 4: Simplify right side
    462.66x = 263,069.76
  5. Step 5: Solve for x
    x = 263,069.76/462.66
  6. Step 6: Final answer
    x = 568.60

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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.