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Finding the Fourth Proportional to 372.34, 561.20 and 352.54

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Solution

The fourth proportional to 372.34, 561.20 and 352.54 is: 531.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.34 : 561.20 = 352.54 : x
  2. Step 2: Convert to fraction form
    372.34/561.20 = 352.54/x
  3. Step 3: Cross multiply
    372.34x = 561.20 × 352.54
  4. Step 4: Simplify right side
    372.34x = 197,845.45
  5. Step 5: Solve for x
    x = 197,845.45/372.34
  6. Step 6: Final answer
    x = 531.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.