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Finding the Fourth Proportional to 1,770.19, 2,655.29 and 615.94

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Solution

The fourth proportional to 1,770.19, 2,655.29 and 615.94 is: 923.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.19 : 2,655.29 = 615.94 : x
  2. Step 2: Convert to fraction form
    1,770.19/2,655.29 = 615.94/x
  3. Step 3: Cross multiply
    1,770.19x = 2,655.29 × 615.94
  4. Step 4: Simplify right side
    1,770.19x = 1,635,494.22
  5. Step 5: Solve for x
    x = 1,635,494.22/1,770.19
  6. Step 6: Final answer
    x = 923.91

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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.