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Finding the Fourth Proportional to 268.28, 403.85 and 243.14

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Solution

The fourth proportional to 268.28, 403.85 and 243.14 is: 366.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.28 : 403.85 = 243.14 : x
  2. Step 2: Convert to fraction form
    268.28/403.85 = 243.14/x
  3. Step 3: Cross multiply
    268.28x = 403.85 × 243.14
  4. Step 4: Simplify right side
    268.28x = 98,190.68
  5. Step 5: Solve for x
    x = 98,190.68/268.28
  6. Step 6: Final answer
    x = 366.00

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.