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Finding the Fourth Proportional to 614.20, 920.74 and 248.92

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Solution

The fourth proportional to 614.20, 920.74 and 248.92 is: 373.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.20 : 920.74 = 248.92 : x
  2. Step 2: Convert to fraction form
    614.20/920.74 = 248.92/x
  3. Step 3: Cross multiply
    614.20x = 920.74 × 248.92
  4. Step 4: Simplify right side
    614.20x = 229,190.60
  5. Step 5: Solve for x
    x = 229,190.60/614.20
  6. Step 6: Final answer
    x = 373.15

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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.