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Finding the Fourth Proportional to 1,780.52, 2,671.14 and 610.42

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Solution

The fourth proportional to 1,780.52, 2,671.14 and 610.42 is: 915.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.52 : 2,671.14 = 610.42 : x
  2. Step 2: Convert to fraction form
    1,780.52/2,671.14 = 610.42/x
  3. Step 3: Cross multiply
    1,780.52x = 2,671.14 × 610.42
  4. Step 4: Simplify right side
    1,780.52x = 1,630,517.28
  5. Step 5: Solve for x
    x = 1,630,517.28/1,780.52
  6. Step 6: Final answer
    x = 915.75

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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.