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Finding the Fourth Proportional to 322.30, 443.91 and 260.02

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Solution

The fourth proportional to 322.30, 443.91 and 260.02 is: 358.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.30 : 443.91 = 260.02 : x
  2. Step 2: Convert to fraction form
    322.30/443.91 = 260.02/x
  3. Step 3: Cross multiply
    322.30x = 443.91 × 260.02
  4. Step 4: Simplify right side
    322.30x = 115,425.48
  5. Step 5: Solve for x
    x = 115,425.48/322.30
  6. Step 6: Final answer
    x = 358.13

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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.