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Finding the Fourth Proportional to 614.44, 920.70 and 325.48

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Solution

The fourth proportional to 614.44, 920.70 and 325.48 is: 487.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.44 : 920.70 = 325.48 : x
  2. Step 2: Convert to fraction form
    614.44/920.70 = 325.48/x
  3. Step 3: Cross multiply
    614.44x = 920.70 × 325.48
  4. Step 4: Simplify right side
    614.44x = 299,669.44
  5. Step 5: Solve for x
    x = 299,669.44/614.44
  6. Step 6: Final answer
    x = 487.71

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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.