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Finding the Fourth Proportional to 449.13, 672.99 and 266.07

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Solution

The fourth proportional to 449.13, 672.99 and 266.07 is: 398.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.13 : 672.99 = 266.07 : x
  2. Step 2: Convert to fraction form
    449.13/672.99 = 266.07/x
  3. Step 3: Cross multiply
    449.13x = 672.99 × 266.07
  4. Step 4: Simplify right side
    449.13x = 179,062.45
  5. Step 5: Solve for x
    x = 179,062.45/449.13
  6. Step 6: Final answer
    x = 398.69

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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.