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Finding the Fourth Proportional to 322.67, 445.14 and 260.70

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Solution

The fourth proportional to 322.67, 445.14 and 260.70 is: 359.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.67 : 445.14 = 260.70 : x
  2. Step 2: Convert to fraction form
    322.67/445.14 = 260.70/x
  3. Step 3: Cross multiply
    322.67x = 445.14 × 260.70
  4. Step 4: Simplify right side
    322.67x = 116,048.00
  5. Step 5: Solve for x
    x = 116,048.00/322.67
  6. Step 6: Final answer
    x = 359.65

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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.