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Finding the Fourth Proportional to 966.63, 1,334.51 and 672.30

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Solution

The fourth proportional to 966.63, 1,334.51 and 672.30 is: 928.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.63 : 1,334.51 = 672.30 : x
  2. Step 2: Convert to fraction form
    966.63/1,334.51 = 672.30/x
  3. Step 3: Cross multiply
    966.63x = 1,334.51 × 672.30
  4. Step 4: Simplify right side
    966.63x = 897,188.56
  5. Step 5: Solve for x
    x = 897,188.56/966.63
  6. Step 6: Final answer
    x = 928.16

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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.