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Finding the Fourth Proportional to 445.32, 614.54 and 248.85

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Solution

The fourth proportional to 445.32, 614.54 and 248.85 is: 343.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.32 : 614.54 = 248.85 : x
  2. Step 2: Convert to fraction form
    445.32/614.54 = 248.85/x
  3. Step 3: Cross multiply
    445.32x = 614.54 × 248.85
  4. Step 4: Simplify right side
    445.32x = 152,927.03
  5. Step 5: Solve for x
    x = 152,927.03/445.32
  6. Step 6: Final answer
    x = 343.41

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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.