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Finding the Fourth Proportional to 643.23, 964.14 and 335.00

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Solution

The fourth proportional to 643.23, 964.14 and 335.00 is: 502.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    643.23 : 964.14 = 335.00 : x
  2. Step 2: Convert to fraction form
    643.23/964.14 = 335.00/x
  3. Step 3: Cross multiply
    643.23x = 964.14 × 335.00
  4. Step 4: Simplify right side
    643.23x = 322,982.08
  5. Step 5: Solve for x
    x = 322,982.08/643.23
  6. Step 6: Final answer
    x = 502.13

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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.