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Finding the Fourth Proportional to 487.13, 672.24 and 266.09

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Solution

The fourth proportional to 487.13, 672.24 and 266.09 is: 367.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.13 : 672.24 = 266.09 : x
  2. Step 2: Convert to fraction form
    487.13/672.24 = 266.09/x
  3. Step 3: Cross multiply
    487.13x = 672.24 × 266.09
  4. Step 4: Simplify right side
    487.13x = 178,872.98
  5. Step 5: Solve for x
    x = 178,872.98/487.13
  6. Step 6: Final answer
    x = 367.20

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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.