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Finding the Fourth Proportional to 324.48, 446.40 and 282.88

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Solution

The fourth proportional to 324.48, 446.40 and 282.88 is: 389.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.48 : 446.40 = 282.88 : x
  2. Step 2: Convert to fraction form
    324.48/446.40 = 282.88/x
  3. Step 3: Cross multiply
    324.48x = 446.40 × 282.88
  4. Step 4: Simplify right side
    324.48x = 126,277.63
  5. Step 5: Solve for x
    x = 126,277.63/324.48
  6. Step 6: Final answer
    x = 389.17

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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.