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Finding the Fourth Proportional to 233.28, 322.56 and 194.40

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Solution

The fourth proportional to 233.28, 322.56 and 194.40 is: 268.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.28 : 322.56 = 194.40 : x
  2. Step 2: Convert to fraction form
    233.28/322.56 = 194.40/x
  3. Step 3: Cross multiply
    233.28x = 322.56 × 194.40
  4. Step 4: Simplify right side
    233.28x = 62,705.66
  5. Step 5: Solve for x
    x = 62,705.66/233.28
  6. Step 6: Final answer
    x = 268.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.