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Finding the Fourth Proportional to 967.18, 1,449.61 and 446.47

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Solution

The fourth proportional to 967.18, 1,449.61 and 446.47 is: 669.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.18 : 1,449.61 = 446.47 : x
  2. Step 2: Convert to fraction form
    967.18/1,449.61 = 446.47/x
  3. Step 3: Cross multiply
    967.18x = 1,449.61 × 446.47
  4. Step 4: Simplify right side
    967.18x = 647,207.38
  5. Step 5: Solve for x
    x = 647,207.38/967.18
  6. Step 6: Final answer
    x = 669.17

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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.