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Finding the Fourth Proportional to 552.68, 761.60 and 395.04

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Solution

The fourth proportional to 552.68, 761.60 and 395.04 is: 544.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.68 : 761.60 = 395.04 : x
  2. Step 2: Convert to fraction form
    552.68/761.60 = 395.04/x
  3. Step 3: Cross multiply
    552.68x = 761.60 × 395.04
  4. Step 4: Simplify right side
    552.68x = 300,863.45
  5. Step 5: Solve for x
    x = 300,863.45/552.68
  6. Step 6: Final answer
    x = 544.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.