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Finding the Fourth Proportional to 247.08, 368.44 and 213.06

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Solution

The fourth proportional to 247.08, 368.44 and 213.06 is: 317.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.08 : 368.44 = 213.06 : x
  2. Step 2: Convert to fraction form
    247.08/368.44 = 213.06/x
  3. Step 3: Cross multiply
    247.08x = 368.44 × 213.06
  4. Step 4: Simplify right side
    247.08x = 78,499.83
  5. Step 5: Solve for x
    x = 78,499.83/247.08
  6. Step 6: Final answer
    x = 317.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.