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Finding the Fourth Proportional to 342.74, 513.26 and 245

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Solution

The fourth proportional to 342.74, 513.26 and 245 is: 366.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.74 : 513.26 = 245 : x
  2. Step 2: Convert to fraction form
    342.74/513.26 = 245/x
  3. Step 3: Cross multiply
    342.74x = 513.26 × 245
  4. Step 4: Simplify right side
    342.74x = 125,748.70
  5. Step 5: Solve for x
    x = 125,748.70/342.74
  6. Step 6: Final answer
    x = 366.89

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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.