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Finding the Fourth Proportional to 407.83, 562.88 and 267.90

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Solution

The fourth proportional to 407.83, 562.88 and 267.90 is: 369.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.83 : 562.88 = 267.90 : x
  2. Step 2: Convert to fraction form
    407.83/562.88 = 267.90/x
  3. Step 3: Cross multiply
    407.83x = 562.88 × 267.90
  4. Step 4: Simplify right side
    407.83x = 150,795.55
  5. Step 5: Solve for x
    x = 150,795.55/407.83
  6. Step 6: Final answer
    x = 369.75

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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.