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Finding the Fourth Proportional to 637.97, 956.98 and 345.70

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Solution

The fourth proportional to 637.97, 956.98 and 345.70 is: 518.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.97 : 956.98 = 345.70 : x
  2. Step 2: Convert to fraction form
    637.97/956.98 = 345.70/x
  3. Step 3: Cross multiply
    637.97x = 956.98 × 345.70
  4. Step 4: Simplify right side
    637.97x = 330,827.99
  5. Step 5: Solve for x
    x = 330,827.99/637.97
  6. Step 6: Final answer
    x = 518.56

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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.