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Finding the Fourth Proportional to 1,770.56, 2,654.22 and 615.50

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Solution

The fourth proportional to 1,770.56, 2,654.22 and 615.50 is: 922.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.56 : 2,654.22 = 615.50 : x
  2. Step 2: Convert to fraction form
    1,770.56/2,654.22 = 615.50/x
  3. Step 3: Cross multiply
    1,770.56x = 2,654.22 × 615.50
  4. Step 4: Simplify right side
    1,770.56x = 1,633,672.41
  5. Step 5: Solve for x
    x = 1,633,672.41/1,770.56
  6. Step 6: Final answer
    x = 922.69

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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.