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Finding the Fourth Proportional to 614.23, 921.61 and 325.60

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Solution

The fourth proportional to 614.23, 921.61 and 325.60 is: 488.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.23 : 921.61 = 325.60 : x
  2. Step 2: Convert to fraction form
    614.23/921.61 = 325.60/x
  3. Step 3: Cross multiply
    614.23x = 921.61 × 325.60
  4. Step 4: Simplify right side
    614.23x = 300,073.10
  5. Step 5: Solve for x
    x = 300,073.10/614.23
  6. Step 6: Final answer
    x = 488.54

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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.