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Finding the Fourth Proportional to 324.80, 489.26 and 292.76

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Solution

The fourth proportional to 324.80, 489.26 and 292.76 is: 441.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.80 : 489.26 = 292.76 : x
  2. Step 2: Convert to fraction form
    324.80/489.26 = 292.76/x
  3. Step 3: Cross multiply
    324.80x = 489.26 × 292.76
  4. Step 4: Simplify right side
    324.80x = 143,235.76
  5. Step 5: Solve for x
    x = 143,235.76/324.80
  6. Step 6: Final answer
    x = 441.00

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.