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Finding the Fourth Proportional to 659.07, 906.44 and 540.15

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Solution

The fourth proportional to 659.07, 906.44 and 540.15 is: 742.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.07 : 906.44 = 540.15 : x
  2. Step 2: Convert to fraction form
    659.07/906.44 = 540.15/x
  3. Step 3: Cross multiply
    659.07x = 906.44 × 540.15
  4. Step 4: Simplify right side
    659.07x = 489,610.87
  5. Step 5: Solve for x
    x = 489,610.87/659.07
  6. Step 6: Final answer
    x = 742.88

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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.