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Finding the Fourth Proportional to 771.75, 1,062.54 and 659.52

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Solution

The fourth proportional to 771.75, 1,062.54 and 659.52 is: 908.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    771.75 : 1,062.54 = 659.52 : x
  2. Step 2: Convert to fraction form
    771.75/1,062.54 = 659.52/x
  3. Step 3: Cross multiply
    771.75x = 1,062.54 × 659.52
  4. Step 4: Simplify right side
    771.75x = 700,766.38
  5. Step 5: Solve for x
    x = 700,766.38/771.75
  6. Step 6: Final answer
    x = 908.02

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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.