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Finding the Fourth Proportional to 653.73, 980.47 and 191.53

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Solution

The fourth proportional to 653.73, 980.47 and 191.53 is: 287.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.73 : 980.47 = 191.53 : x
  2. Step 2: Convert to fraction form
    653.73/980.47 = 191.53/x
  3. Step 3: Cross multiply
    653.73x = 980.47 × 191.53
  4. Step 4: Simplify right side
    653.73x = 187,789.42
  5. Step 5: Solve for x
    x = 187,789.42/653.73
  6. Step 6: Final answer
    x = 287.26

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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.