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Finding the Fourth Proportional to 349.68, 525.33 and 320.79

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Solution

The fourth proportional to 349.68, 525.33 and 320.79 is: 481.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.68 : 525.33 = 320.79 : x
  2. Step 2: Convert to fraction form
    349.68/525.33 = 320.79/x
  3. Step 3: Cross multiply
    349.68x = 525.33 × 320.79
  4. Step 4: Simplify right side
    349.68x = 168,520.61
  5. Step 5: Solve for x
    x = 168,520.61/349.68
  6. Step 6: Final answer
    x = 481.93

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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.