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Finding the Fourth Proportional to 614.56, 922.20 and 493.60

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Solution

The fourth proportional to 614.56, 922.20 and 493.60 is: 740.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.56 : 922.20 = 493.60 : x
  2. Step 2: Convert to fraction form
    614.56/922.20 = 493.60/x
  3. Step 3: Cross multiply
    614.56x = 922.20 × 493.60
  4. Step 4: Simplify right side
    614.56x = 455,197.92
  5. Step 5: Solve for x
    x = 455,197.92/614.56
  6. Step 6: Final answer
    x = 740.69

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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.