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Finding the Fourth Proportional to 445.43, 614.70 and 248.95

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Solution

The fourth proportional to 445.43, 614.70 and 248.95 is: 343.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.43 : 614.70 = 248.95 : x
  2. Step 2: Convert to fraction form
    445.43/614.70 = 248.95/x
  3. Step 3: Cross multiply
    445.43x = 614.70 × 248.95
  4. Step 4: Simplify right side
    445.43x = 153,029.57
  5. Step 5: Solve for x
    x = 153,029.57/445.43
  6. Step 6: Final answer
    x = 343.55

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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.