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Finding the Fourth Proportional to 489.80, 675.66 and 293.24

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Solution

The fourth proportional to 489.80, 675.66 and 293.24 is: 404.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.80 : 675.66 = 293.24 : x
  2. Step 2: Convert to fraction form
    489.80/675.66 = 293.24/x
  3. Step 3: Cross multiply
    489.80x = 675.66 × 293.24
  4. Step 4: Simplify right side
    489.80x = 198,130.54
  5. Step 5: Solve for x
    x = 198,130.54/489.80
  6. Step 6: Final answer
    x = 404.51

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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.