Home / 643.11-965.23-335.18

Finding the Fourth Proportional to 643.11, 965.23 and 335.18

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Solution

The fourth proportional to 643.11, 965.23 and 335.18 is: 503.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    643.11 : 965.23 = 335.18 : x
  2. Step 2: Convert to fraction form
    643.11/965.23 = 335.18/x
  3. Step 3: Cross multiply
    643.11x = 965.23 × 335.18
  4. Step 4: Simplify right side
    643.11x = 323,525.79
  5. Step 5: Solve for x
    x = 323,525.79/643.11
  6. Step 6: Final answer
    x = 503.06

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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.