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Finding the Fourth Proportional to 271.63, 374.40 and 188.61

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Solution

The fourth proportional to 271.63, 374.40 and 188.61 is: 259.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.63 : 374.40 = 188.61 : x
  2. Step 2: Convert to fraction form
    271.63/374.40 = 188.61/x
  3. Step 3: Cross multiply
    271.63x = 374.40 × 188.61
  4. Step 4: Simplify right side
    271.63x = 70,615.58
  5. Step 5: Solve for x
    x = 70,615.58/271.63
  6. Step 6: Final answer
    x = 259.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.