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Finding the Fourth Proportional to 1,663.15, 2,494.17 and 552.31

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Solution

The fourth proportional to 1,663.15, 2,494.17 and 552.31 is: 828.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663.15 : 2,494.17 = 552.31 : x
  2. Step 2: Convert to fraction form
    1,663.15/2,494.17 = 552.31/x
  3. Step 3: Cross multiply
    1,663.15x = 2,494.17 × 552.31
  4. Step 4: Simplify right side
    1,663.15x = 1,377,555.03
  5. Step 5: Solve for x
    x = 1,377,555.03/1,663.15
  6. Step 6: Final answer
    x = 828.28

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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.