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Finding the Fourth Proportional to 966.46, 1,333.72 and 745

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Solution

The fourth proportional to 966.46, 1,333.72 and 745 is: 1,028.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.46 : 1,333.72 = 745 : x
  2. Step 2: Convert to fraction form
    966.46/1,333.72 = 745/x
  3. Step 3: Cross multiply
    966.46x = 1,333.72 × 745
  4. Step 4: Simplify right side
    966.46x = 993,621.40
  5. Step 5: Solve for x
    x = 993,621.40/966.46
  6. Step 6: Final answer
    x = 1,028.10

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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.