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Finding the Fourth Proportional to 614.28, 921.44 and 203.41

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Solution

The fourth proportional to 614.28, 921.44 and 203.41 is: 305.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.28 : 921.44 = 203.41 : x
  2. Step 2: Convert to fraction form
    614.28/921.44 = 203.41/x
  3. Step 3: Cross multiply
    614.28x = 921.44 × 203.41
  4. Step 4: Simplify right side
    614.28x = 187,430.11
  5. Step 5: Solve for x
    x = 187,430.11/614.28
  6. Step 6: Final answer
    x = 305.12

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Similar ratio
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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.