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Finding the Fourth Proportional to 351.60, 526.80 and 168.60

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Solution

The fourth proportional to 351.60, 526.80 and 168.60 is: 252.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.60 : 526.80 = 168.60 : x
  2. Step 2: Convert to fraction form
    351.60/526.80 = 168.60/x
  3. Step 3: Cross multiply
    351.60x = 526.80 × 168.60
  4. Step 4: Simplify right side
    351.60x = 88,818.48
  5. Step 5: Solve for x
    x = 88,818.48/351.60
  6. Step 6: Final answer
    x = 252.61

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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.