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Finding the Fourth Proportional to 324.07, 444.30 and 318.22

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Solution

The fourth proportional to 324.07, 444.30 and 318.22 is: 436.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.07 : 444.30 = 318.22 : x
  2. Step 2: Convert to fraction form
    324.07/444.30 = 318.22/x
  3. Step 3: Cross multiply
    324.07x = 444.30 × 318.22
  4. Step 4: Simplify right side
    324.07x = 141,385.15
  5. Step 5: Solve for x
    x = 141,385.15/324.07
  6. Step 6: Final answer
    x = 436.28

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.