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Finding the Fourth Proportional to 351.48, 528.18 and 214.92

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Solution

The fourth proportional to 351.48, 528.18 and 214.92 is: 322.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.48 : 528.18 = 214.92 : x
  2. Step 2: Convert to fraction form
    351.48/528.18 = 214.92/x
  3. Step 3: Cross multiply
    351.48x = 528.18 × 214.92
  4. Step 4: Simplify right side
    351.48x = 113,516.45
  5. Step 5: Solve for x
    x = 113,516.45/351.48
  6. Step 6: Final answer
    x = 322.97

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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.