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Finding the Fourth Proportional to 772.27, 1,158.14 and 449.62

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Solution

The fourth proportional to 772.27, 1,158.14 and 449.62 is: 674.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    772.27 : 1,158.14 = 449.62 : x
  2. Step 2: Convert to fraction form
    772.27/1,158.14 = 449.62/x
  3. Step 3: Cross multiply
    772.27x = 1,158.14 × 449.62
  4. Step 4: Simplify right side
    772.27x = 520,720.66
  5. Step 5: Solve for x
    x = 520,720.66/772.27
  6. Step 6: Final answer
    x = 674.27

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1.5x scale

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.