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Finding the Fourth Proportional to 359.18, 541.04 and 321.11

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Solution

The fourth proportional to 359.18, 541.04 and 321.11 is: 483.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.18 : 541.04 = 321.11 : x
  2. Step 2: Convert to fraction form
    359.18/541.04 = 321.11/x
  3. Step 3: Cross multiply
    359.18x = 541.04 × 321.11
  4. Step 4: Simplify right side
    359.18x = 173,731.75
  5. Step 5: Solve for x
    x = 173,731.75/359.18
  6. Step 6: Final answer
    x = 483.69

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.