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Finding the Fourth Proportional to 321.74, 483.16 and 296.42

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Solution

The fourth proportional to 321.74, 483.16 and 296.42 is: 445.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    321.74 : 483.16 = 296.42 : x
  2. Step 2: Convert to fraction form
    321.74/483.16 = 296.42/x
  3. Step 3: Cross multiply
    321.74x = 483.16 × 296.42
  4. Step 4: Simplify right side
    321.74x = 143,218.29
  5. Step 5: Solve for x
    x = 143,218.29/321.74
  6. Step 6: Final answer
    x = 445.14

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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.