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Finding the Fourth Proportional to 362.34, 542.13 and 328.15

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Solution

The fourth proportional to 362.34, 542.13 and 328.15 is: 490.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.34 : 542.13 = 328.15 : x
  2. Step 2: Convert to fraction form
    362.34/542.13 = 328.15/x
  3. Step 3: Cross multiply
    362.34x = 542.13 × 328.15
  4. Step 4: Simplify right side
    362.34x = 177,899.41
  5. Step 5: Solve for x
    x = 177,899.41/362.34
  6. Step 6: Final answer
    x = 490.97

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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.