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Finding the Fourth Proportional to 402.81, 604.22 and 352.07

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Solution

The fourth proportional to 402.81, 604.22 and 352.07 is: 528.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.81 : 604.22 = 352.07 : x
  2. Step 2: Convert to fraction form
    402.81/604.22 = 352.07/x
  3. Step 3: Cross multiply
    402.81x = 604.22 × 352.07
  4. Step 4: Simplify right side
    402.81x = 212,722.95
  5. Step 5: Solve for x
    x = 212,722.95/402.81
  6. Step 6: Final answer
    x = 528.10

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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.