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Finding the Fourth Proportional to 528.69, 793.08 and 220.49

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Solution

The fourth proportional to 528.69, 793.08 and 220.49 is: 330.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.69 : 793.08 = 220.49 : x
  2. Step 2: Convert to fraction form
    528.69/793.08 = 220.49/x
  3. Step 3: Cross multiply
    528.69x = 793.08 × 220.49
  4. Step 4: Simplify right side
    528.69x = 174,866.21
  5. Step 5: Solve for x
    x = 174,866.21/528.69
  6. Step 6: Final answer
    x = 330.75

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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.