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Finding the Fourth Proportional to 449.77, 674.63 and 141.61

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Solution

The fourth proportional to 449.77, 674.63 and 141.61 is: 212.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.77 : 674.63 = 141.61 : x
  2. Step 2: Convert to fraction form
    449.77/674.63 = 141.61/x
  3. Step 3: Cross multiply
    449.77x = 674.63 × 141.61
  4. Step 4: Simplify right side
    449.77x = 95,533.02
  5. Step 5: Solve for x
    x = 95,533.02/449.77
  6. Step 6: Final answer
    x = 212.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.