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Finding the Fourth Proportional to 658.42, 908.42 and 510.80

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Solution

The fourth proportional to 658.42, 908.42 and 510.80 is: 704.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.42 : 908.42 = 510.80 : x
  2. Step 2: Convert to fraction form
    658.42/908.42 = 510.80/x
  3. Step 3: Cross multiply
    658.42x = 908.42 × 510.80
  4. Step 4: Simplify right side
    658.42x = 464,020.94
  5. Step 5: Solve for x
    x = 464,020.94/658.42
  6. Step 6: Final answer
    x = 704.75

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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.