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Finding the Fourth Proportional to 449.24, 672.98 and 275.38

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Solution

The fourth proportional to 449.24, 672.98 and 275.38 is: 412.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.24 : 672.98 = 275.38 : x
  2. Step 2: Convert to fraction form
    449.24/672.98 = 275.38/x
  3. Step 3: Cross multiply
    449.24x = 672.98 × 275.38
  4. Step 4: Simplify right side
    449.24x = 185,325.23
  5. Step 5: Solve for x
    x = 185,325.23/449.24
  6. Step 6: Final answer
    x = 412.53

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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.