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Finding the Fourth Proportional to 116.63, 174.74 and 55.68

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Solution

The fourth proportional to 116.63, 174.74 and 55.68 is: 83.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.63 : 174.74 = 55.68 : x
  2. Step 2: Convert to fraction form
    116.63/174.74 = 55.68/x
  3. Step 3: Cross multiply
    116.63x = 174.74 × 55.68
  4. Step 4: Simplify right side
    116.63x = 9,729.24
  5. Step 5: Solve for x
    x = 9,729.24/116.63
  6. Step 6: Final answer
    x = 83.42

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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.