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Finding the Fourth Proportional to 658.90, 908.49 and 483.94

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Solution

The fourth proportional to 658.90, 908.49 and 483.94 is: 667.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.90 : 908.49 = 483.94 : x
  2. Step 2: Convert to fraction form
    658.90/908.49 = 483.94/x
  3. Step 3: Cross multiply
    658.90x = 908.49 × 483.94
  4. Step 4: Simplify right side
    658.90x = 439,654.65
  5. Step 5: Solve for x
    x = 439,654.65/658.90
  6. Step 6: Final answer
    x = 667.26

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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.