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Finding the Fourth Proportional to 966.12, 1,334 and 720.08

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Solution

The fourth proportional to 966.12, 1,334 and 720.08 is: 994.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.12 : 1,334 = 720.08 : x
  2. Step 2: Convert to fraction form
    966.12/1,334 = 720.08/x
  3. Step 3: Cross multiply
    966.12x = 1,334 × 720.08
  4. Step 4: Simplify right side
    966.12x = 960,586.72
  5. Step 5: Solve for x
    x = 960,586.72/966.12
  6. Step 6: Final answer
    x = 994.27

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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.