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Finding the Fourth Proportional to 456.63, 630.15 and 249.63

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Solution

The fourth proportional to 456.63, 630.15 and 249.63 is: 344.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.63 : 630.15 = 249.63 : x
  2. Step 2: Convert to fraction form
    456.63/630.15 = 249.63/x
  3. Step 3: Cross multiply
    456.63x = 630.15 × 249.63
  4. Step 4: Simplify right side
    456.63x = 157,299.95
  5. Step 5: Solve for x
    x = 157,299.95/456.63
  6. Step 6: Final answer
    x = 344.48

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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.