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Finding the Fourth Proportional to 506.80, 760.38 and 489.52

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Solution

The fourth proportional to 506.80, 760.38 and 489.52 is: 734.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.80 : 760.38 = 489.52 : x
  2. Step 2: Convert to fraction form
    506.80/760.38 = 489.52/x
  3. Step 3: Cross multiply
    506.80x = 760.38 × 489.52
  4. Step 4: Simplify right side
    506.80x = 372,221.22
  5. Step 5: Solve for x
    x = 372,221.22/506.80
  6. Step 6: Final answer
    x = 734.45

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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.