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Finding the Fourth Proportional to 1,363.17, 2,040.66 and 876.60

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Solution

The fourth proportional to 1,363.17, 2,040.66 and 876.60 is: 1,312.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,363.17 : 2,040.66 = 876.60 : x
  2. Step 2: Convert to fraction form
    1,363.17/2,040.66 = 876.60/x
  3. Step 3: Cross multiply
    1,363.17x = 2,040.66 × 876.60
  4. Step 4: Simplify right side
    1,363.17x = 1,788,842.56
  5. Step 5: Solve for x
    x = 1,788,842.56/1,363.17
  6. Step 6: Final answer
    x = 1,312.27

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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.