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Finding the Fourth Proportional to 251.47, 346.98 and 216.46

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Solution

The fourth proportional to 251.47, 346.98 and 216.46 is: 298.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.47 : 346.98 = 216.46 : x
  2. Step 2: Convert to fraction form
    251.47/346.98 = 216.46/x
  3. Step 3: Cross multiply
    251.47x = 346.98 × 216.46
  4. Step 4: Simplify right side
    251.47x = 75,107.29
  5. Step 5: Solve for x
    x = 75,107.29/251.47
  6. Step 6: Final answer
    x = 298.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.