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Finding the Fourth Proportional to 113.56, 155.54 and 108.08

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Solution

The fourth proportional to 113.56, 155.54 and 108.08 is: 148.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.56 : 155.54 = 108.08 : x
  2. Step 2: Convert to fraction form
    113.56/155.54 = 108.08/x
  3. Step 3: Cross multiply
    113.56x = 155.54 × 108.08
  4. Step 4: Simplify right side
    113.56x = 16,810.76
  5. Step 5: Solve for x
    x = 16,810.76/113.56
  6. Step 6: Final answer
    x = 148.03

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.