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Finding the Fourth Proportional to 966.32, 1,448.16 and 479.71

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Solution

The fourth proportional to 966.32, 1,448.16 and 479.71 is: 718.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.32 : 1,448.16 = 479.71 : x
  2. Step 2: Convert to fraction form
    966.32/1,448.16 = 479.71/x
  3. Step 3: Cross multiply
    966.32x = 1,448.16 × 479.71
  4. Step 4: Simplify right side
    966.32x = 694,696.83
  5. Step 5: Solve for x
    x = 694,696.83/966.32
  6. Step 6: Final answer
    x = 718.91

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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.