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Finding the Fourth Proportional to 708.70, 976.46 and 475.42

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Solution

The fourth proportional to 708.70, 976.46 and 475.42 is: 655.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.70 : 976.46 = 475.42 : x
  2. Step 2: Convert to fraction form
    708.70/976.46 = 475.42/x
  3. Step 3: Cross multiply
    708.70x = 976.46 × 475.42
  4. Step 4: Simplify right side
    708.70x = 464,228.61
  5. Step 5: Solve for x
    x = 464,228.61/708.70
  6. Step 6: Final answer
    x = 655.04

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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.