Home / 643.28-964.38-232.18

Finding the Fourth Proportional to 643.28, 964.38 and 232.18

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Solution

The fourth proportional to 643.28, 964.38 and 232.18 is: 348.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    643.28 : 964.38 = 232.18 : x
  2. Step 2: Convert to fraction form
    643.28/964.38 = 232.18/x
  3. Step 3: Cross multiply
    643.28x = 964.38 × 232.18
  4. Step 4: Simplify right side
    643.28x = 223,909.75
  5. Step 5: Solve for x
    x = 223,909.75/643.28
  6. Step 6: Final answer
    x = 348.08

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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.