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Finding the Fourth Proportional to 2,418.29, 3,627.29 and 663.17

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Solution

The fourth proportional to 2,418.29, 3,627.29 and 663.17 is: 994.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,418.29 : 3,627.29 = 663.17 : x
  2. Step 2: Convert to fraction form
    2,418.29/3,627.29 = 663.17/x
  3. Step 3: Cross multiply
    2,418.29x = 3,627.29 × 663.17
  4. Step 4: Simplify right side
    2,418.29x = 2,405,509.91
  5. Step 5: Solve for x
    x = 2,405,509.91/2,418.29
  6. Step 6: Final answer
    x = 994.72

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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.