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Finding the Fourth Proportional to 1,867.28, 2,800.92 and 568.70

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Solution

The fourth proportional to 1,867.28, 2,800.92 and 568.70 is: 853.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.28 : 2,800.92 = 568.70 : x
  2. Step 2: Convert to fraction form
    1,867.28/2,800.92 = 568.70/x
  3. Step 3: Cross multiply
    1,867.28x = 2,800.92 × 568.70
  4. Step 4: Simplify right side
    1,867.28x = 1,592,883.20
  5. Step 5: Solve for x
    x = 1,592,883.20/1,867.28
  6. Step 6: Final answer
    x = 853.05

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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.