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Finding the Fourth Proportional to 351.47, 527.18 and 145.96

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Solution

The fourth proportional to 351.47, 527.18 and 145.96 is: 218.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.47 : 527.18 = 145.96 : x
  2. Step 2: Convert to fraction form
    351.47/527.18 = 145.96/x
  3. Step 3: Cross multiply
    351.47x = 527.18 × 145.96
  4. Step 4: Simplify right side
    351.47x = 76,945.15
  5. Step 5: Solve for x
    x = 76,945.15/351.47
  6. Step 6: Final answer
    x = 218.93

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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.