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Finding the Fourth Proportional to 462.50, 637.90 and 338.66

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Solution

The fourth proportional to 462.50, 637.90 and 338.66 is: 467.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.50 : 637.90 = 338.66 : x
  2. Step 2: Convert to fraction form
    462.50/637.90 = 338.66/x
  3. Step 3: Cross multiply
    462.50x = 637.90 × 338.66
  4. Step 4: Simplify right side
    462.50x = 216,027.18
  5. Step 5: Solve for x
    x = 216,027.18/462.50
  6. Step 6: Final answer
    x = 467.09

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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.