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Finding the Fourth Proportional to 147.36, 222 and 115.44

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Solution

The fourth proportional to 147.36, 222 and 115.44 is: 173.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.36 : 222 = 115.44 : x
  2. Step 2: Convert to fraction form
    147.36/222 = 115.44/x
  3. Step 3: Cross multiply
    147.36x = 222 × 115.44
  4. Step 4: Simplify right side
    147.36x = 25,627.68
  5. Step 5: Solve for x
    x = 25,627.68/147.36
  6. Step 6: Final answer
    x = 173.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.