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Finding the Fourth Proportional to 460.27, 634.80 and 385.30

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Solution

The fourth proportional to 460.27, 634.80 and 385.30 is: 531.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.27 : 634.80 = 385.30 : x
  2. Step 2: Convert to fraction form
    460.27/634.80 = 385.30/x
  3. Step 3: Cross multiply
    460.27x = 634.80 × 385.30
  4. Step 4: Simplify right side
    460.27x = 244,588.44
  5. Step 5: Solve for x
    x = 244,588.44/460.27
  6. Step 6: Final answer
    x = 531.40

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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.