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Finding the Fourth Proportional to 473.21, 708.90 and 267.15

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Solution

The fourth proportional to 473.21, 708.90 and 267.15 is: 400.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.21 : 708.90 = 267.15 : x
  2. Step 2: Convert to fraction form
    473.21/708.90 = 267.15/x
  3. Step 3: Cross multiply
    473.21x = 708.90 × 267.15
  4. Step 4: Simplify right side
    473.21x = 189,382.64
  5. Step 5: Solve for x
    x = 189,382.64/473.21
  6. Step 6: Final answer
    x = 400.21

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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.