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Finding the Fourth Proportional to 342.54, 513.68 and 234.36

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Solution

The fourth proportional to 342.54, 513.68 and 234.36 is: 351.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.54 : 513.68 = 234.36 : x
  2. Step 2: Convert to fraction form
    342.54/513.68 = 234.36/x
  3. Step 3: Cross multiply
    342.54x = 513.68 × 234.36
  4. Step 4: Simplify right side
    342.54x = 120,384.87
  5. Step 5: Solve for x
    x = 120,384.87/342.54
  6. Step 6: Final answer
    x = 351.45

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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.