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Finding the Fourth Proportional to 351.47, 526.78 and 248.79

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Solution

The fourth proportional to 351.47, 526.78 and 248.79 is: 372.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.47 : 526.78 = 248.79 : x
  2. Step 2: Convert to fraction form
    351.47/526.78 = 248.79/x
  3. Step 3: Cross multiply
    351.47x = 526.78 × 248.79
  4. Step 4: Simplify right side
    351.47x = 131,054.96
  5. Step 5: Solve for x
    x = 131,054.96/351.47
  6. Step 6: Final answer
    x = 372.88

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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.