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Finding the Fourth Proportional to 322.67, 483.08 and 318.11

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Solution

The fourth proportional to 322.67, 483.08 and 318.11 is: 476.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.67 : 483.08 = 318.11 : x
  2. Step 2: Convert to fraction form
    322.67/483.08 = 318.11/x
  3. Step 3: Cross multiply
    322.67x = 483.08 × 318.11
  4. Step 4: Simplify right side
    322.67x = 153,668.57
  5. Step 5: Solve for x
    x = 153,668.57/322.67
  6. Step 6: Final answer
    x = 476.25

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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.