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Finding the Fourth Proportional to 324.06, 447.30 and 307.53

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Solution

The fourth proportional to 324.06, 447.30 and 307.53 is: 424.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.06 : 447.30 = 307.53 : x
  2. Step 2: Convert to fraction form
    324.06/447.30 = 307.53/x
  3. Step 3: Cross multiply
    324.06x = 447.30 × 307.53
  4. Step 4: Simplify right side
    324.06x = 137,554.39
  5. Step 5: Solve for x
    x = 137,554.39/324.06
  6. Step 6: Final answer
    x = 424.48

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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.