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Finding the Fourth Proportional to 538.03, 742.33 and 328.11

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Solution

The fourth proportional to 538.03, 742.33 and 328.11 is: 452.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.03 : 742.33 = 328.11 : x
  2. Step 2: Convert to fraction form
    538.03/742.33 = 328.11/x
  3. Step 3: Cross multiply
    538.03x = 742.33 × 328.11
  4. Step 4: Simplify right side
    538.03x = 243,565.90
  5. Step 5: Solve for x
    x = 243,565.90/538.03
  6. Step 6: Final answer
    x = 452.70

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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.