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Finding the Fourth Proportional to 464.09, 696.20 and 247.55

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Solution

The fourth proportional to 464.09, 696.20 and 247.55 is: 371.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.09 : 696.20 = 247.55 : x
  2. Step 2: Convert to fraction form
    464.09/696.20 = 247.55/x
  3. Step 3: Cross multiply
    464.09x = 696.20 × 247.55
  4. Step 4: Simplify right side
    464.09x = 172,339.59
  5. Step 5: Solve for x
    x = 172,339.59/464.09
  6. Step 6: Final answer
    x = 371.35

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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.