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Finding the Fourth Proportional to 528.43, 729.22 and 292.37

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Solution

The fourth proportional to 528.43, 729.22 and 292.37 is: 403.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.43 : 729.22 = 292.37 : x
  2. Step 2: Convert to fraction form
    528.43/729.22 = 292.37/x
  3. Step 3: Cross multiply
    528.43x = 729.22 × 292.37
  4. Step 4: Simplify right side
    528.43x = 213,203.96
  5. Step 5: Solve for x
    x = 213,203.96/528.43
  6. Step 6: Final answer
    x = 403.47

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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.