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Finding the Fourth Proportional to 964.12, 1,446.24 and 314.92

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Solution

The fourth proportional to 964.12, 1,446.24 and 314.92 is: 472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.12 : 1,446.24 = 314.92 : x
  2. Step 2: Convert to fraction form
    964.12/1,446.24 = 314.92/x
  3. Step 3: Cross multiply
    964.12x = 1,446.24 × 314.92
  4. Step 4: Simplify right side
    964.12x = 455,449.90
  5. Step 5: Solve for x
    x = 455,449.90/964.12
  6. Step 6: Final answer
    x = 472.40

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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.