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Finding the Fourth Proportional to 424.80, 586.62 and 338.10

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Solution

The fourth proportional to 424.80, 586.62 and 338.10 is: 466.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.80 : 586.62 = 338.10 : x
  2. Step 2: Convert to fraction form
    424.80/586.62 = 338.10/x
  3. Step 3: Cross multiply
    424.80x = 586.62 × 338.10
  4. Step 4: Simplify right side
    424.80x = 198,336.22
  5. Step 5: Solve for x
    x = 198,336.22/424.80
  6. Step 6: Final answer
    x = 466.89

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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.