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Finding the Fourth Proportional to 113.83, 170.70 and 55.99

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Solution

The fourth proportional to 113.83, 170.70 and 55.99 is: 83.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.83 : 170.70 = 55.99 : x
  2. Step 2: Convert to fraction form
    113.83/170.70 = 55.99/x
  3. Step 3: Cross multiply
    113.83x = 170.70 × 55.99
  4. Step 4: Simplify right side
    113.83x = 9,556.78
  5. Step 5: Solve for x
    x = 9,556.78/113.83
  6. Step 6: Final answer
    x = 83.96

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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.