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Finding the Fourth Proportional to 324.54, 487.98 and 282.06

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Solution

The fourth proportional to 324.54, 487.98 and 282.06 is: 424.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.54 : 487.98 = 282.06 : x
  2. Step 2: Convert to fraction form
    324.54/487.98 = 282.06/x
  3. Step 3: Cross multiply
    324.54x = 487.98 × 282.06
  4. Step 4: Simplify right side
    324.54x = 137,639.64
  5. Step 5: Solve for x
    x = 137,639.64/324.54
  6. Step 6: Final answer
    x = 424.11

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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.