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Finding the Fourth Proportional to 659.31, 908.97 and 540.84

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Solution

The fourth proportional to 659.31, 908.97 and 540.84 is: 745.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.31 : 908.97 = 540.84 : x
  2. Step 2: Convert to fraction form
    659.31/908.97 = 540.84/x
  3. Step 3: Cross multiply
    659.31x = 908.97 × 540.84
  4. Step 4: Simplify right side
    659.31x = 491,607.33
  5. Step 5: Solve for x
    x = 491,607.33/659.31
  6. Step 6: Final answer
    x = 745.64

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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.