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Finding the Fourth Proportional to 251.29, 346.49 and 212.01

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Solution

The fourth proportional to 251.29, 346.49 and 212.01 is: 292.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.29 : 346.49 = 212.01 : x
  2. Step 2: Convert to fraction form
    251.29/346.49 = 212.01/x
  3. Step 3: Cross multiply
    251.29x = 346.49 × 212.01
  4. Step 4: Simplify right side
    251.29x = 73,459.34
  5. Step 5: Solve for x
    x = 73,459.34/251.29
  6. Step 6: Final answer
    x = 292.33

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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.