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Finding the Fourth Proportional to 407.25, 562.41 and 267.30

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Solution

The fourth proportional to 407.25, 562.41 and 267.30 is: 369.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.25 : 562.41 = 267.30 : x
  2. Step 2: Convert to fraction form
    407.25/562.41 = 267.30/x
  3. Step 3: Cross multiply
    407.25x = 562.41 × 267.30
  4. Step 4: Simplify right side
    407.25x = 150,332.19
  5. Step 5: Solve for x
    x = 150,332.19/407.25
  6. Step 6: Final answer
    x = 369.14

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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.