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Finding the Fourth Proportional to 445.55, 614.86 and 249.11

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Solution

The fourth proportional to 445.55, 614.86 and 249.11 is: 343.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.55 : 614.86 = 249.11 : x
  2. Step 2: Convert to fraction form
    445.55/614.86 = 249.11/x
  3. Step 3: Cross multiply
    445.55x = 614.86 × 249.11
  4. Step 4: Simplify right side
    445.55x = 153,163.61
  5. Step 5: Solve for x
    x = 153,163.61/445.55
  6. Step 6: Final answer
    x = 343.77

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1.5x scale

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.