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Finding the Fourth Proportional to 613.71, 920.23 and 197.17

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Solution

The fourth proportional to 613.71, 920.23 and 197.17 is: 295.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.71 : 920.23 = 197.17 : x
  2. Step 2: Convert to fraction form
    613.71/920.23 = 197.17/x
  3. Step 3: Cross multiply
    613.71x = 920.23 × 197.17
  4. Step 4: Simplify right side
    613.71x = 181,441.75
  5. Step 5: Solve for x
    x = 181,441.75/613.71
  6. Step 6: Final answer
    x = 295.65

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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.