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Finding the Fourth Proportional to 614.14, 921.35 and 197.67

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Solution

The fourth proportional to 614.14, 921.35 and 197.67 is: 296.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.14 : 921.35 = 197.67 : x
  2. Step 2: Convert to fraction form
    614.14/921.35 = 197.67/x
  3. Step 3: Cross multiply
    614.14x = 921.35 × 197.67
  4. Step 4: Simplify right side
    614.14x = 182,123.25
  5. Step 5: Solve for x
    x = 182,123.25/614.14
  6. Step 6: Final answer
    x = 296.55

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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.