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Finding the Fourth Proportional to 1,770.45, 2,654.64 and 731.16

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Solution

The fourth proportional to 1,770.45, 2,654.64 and 731.16 is: 1,096.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.45 : 2,654.64 = 731.16 : x
  2. Step 2: Convert to fraction form
    1,770.45/2,654.64 = 731.16/x
  3. Step 3: Cross multiply
    1,770.45x = 2,654.64 × 731.16
  4. Step 4: Simplify right side
    1,770.45x = 1,940,966.58
  5. Step 5: Solve for x
    x = 1,940,966.58/1,770.45
  6. Step 6: Final answer
    x = 1,096.31

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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.