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Finding the Fourth Proportional to 445.34, 614.57 and 248.86

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Solution

The fourth proportional to 445.34, 614.57 and 248.86 is: 343.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.34 : 614.57 = 248.86 : x
  2. Step 2: Convert to fraction form
    445.34/614.57 = 248.86/x
  3. Step 3: Cross multiply
    445.34x = 614.57 × 248.86
  4. Step 4: Simplify right side
    445.34x = 152,941.89
  5. Step 5: Solve for x
    x = 152,941.89/445.34
  6. Step 6: Final answer
    x = 343.43

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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.