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Finding the Fourth Proportional to 251.72, 346.63 and 214.86

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Solution

The fourth proportional to 251.72, 346.63 and 214.86 is: 295.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.72 : 346.63 = 214.86 : x
  2. Step 2: Convert to fraction form
    251.72/346.63 = 214.86/x
  3. Step 3: Cross multiply
    251.72x = 346.63 × 214.86
  4. Step 4: Simplify right side
    251.72x = 74,476.92
  5. Step 5: Solve for x
    x = 74,476.92/251.72
  6. Step 6: Final answer
    x = 295.87

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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.