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Finding the Fourth Proportional to 528.73, 729.57 and 295.90

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Solution

The fourth proportional to 528.73, 729.57 and 295.90 is: 408.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.73 : 729.57 = 295.90 : x
  2. Step 2: Convert to fraction form
    528.73/729.57 = 295.90/x
  3. Step 3: Cross multiply
    528.73x = 729.57 × 295.90
  4. Step 4: Simplify right side
    528.73x = 215,879.76
  5. Step 5: Solve for x
    x = 215,879.76/528.73
  6. Step 6: Final answer
    x = 408.30

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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.