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Finding the Fourth Proportional to 324.03, 482.80 and 315.33

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Solution

The fourth proportional to 324.03, 482.80 and 315.33 is: 469.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.03 : 482.80 = 315.33 : x
  2. Step 2: Convert to fraction form
    324.03/482.80 = 315.33/x
  3. Step 3: Cross multiply
    324.03x = 482.80 × 315.33
  4. Step 4: Simplify right side
    324.03x = 152,240.20
  5. Step 5: Solve for x
    x = 152,240.20/324.03
  6. Step 6: Final answer
    x = 469.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.