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Finding the Fourth Proportional to 407.47, 562.17 and 267.67

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Solution

The fourth proportional to 407.47, 562.17 and 267.67 is: 369.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.47 : 562.17 = 267.67 : x
  2. Step 2: Convert to fraction form
    407.47/562.17 = 267.67/x
  3. Step 3: Cross multiply
    407.47x = 562.17 × 267.67
  4. Step 4: Simplify right side
    407.47x = 150,476.04
  5. Step 5: Solve for x
    x = 150,476.04/407.47
  6. Step 6: Final answer
    x = 369.29

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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.