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Finding the Fourth Proportional to 528.81, 729.80 and 363.11

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Solution

The fourth proportional to 528.81, 729.80 and 363.11 is: 501.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.81 : 729.80 = 363.11 : x
  2. Step 2: Convert to fraction form
    528.81/729.80 = 363.11/x
  3. Step 3: Cross multiply
    528.81x = 729.80 × 363.11
  4. Step 4: Simplify right side
    528.81x = 264,992.21
  5. Step 5: Solve for x
    x = 264,992.21/528.81
  6. Step 6: Final answer
    x = 501.11

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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.