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Finding the Fourth Proportional to 360.65, 541.28 and 326.63

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Solution

The fourth proportional to 360.65, 541.28 and 326.63 is: 490.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.65 : 541.28 = 326.63 : x
  2. Step 2: Convert to fraction form
    360.65/541.28 = 326.63/x
  3. Step 3: Cross multiply
    360.65x = 541.28 × 326.63
  4. Step 4: Simplify right side
    360.65x = 176,800.46
  5. Step 5: Solve for x
    x = 176,800.46/360.65
  6. Step 6: Final answer
    x = 490.22

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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.