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Finding the Fourth Proportional to 342.34, 513.54 and 125.89

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Solution

The fourth proportional to 342.34, 513.54 and 125.89 is: 188.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.34 : 513.54 = 125.89 : x
  2. Step 2: Convert to fraction form
    342.34/513.54 = 125.89/x
  3. Step 3: Cross multiply
    342.34x = 513.54 × 125.89
  4. Step 4: Simplify right side
    342.34x = 64,649.55
  5. Step 5: Solve for x
    x = 64,649.55/342.34
  6. Step 6: Final answer
    x = 188.85

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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.