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Finding the Fourth Proportional to 114.72, 172.06 and 33.55

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Solution

The fourth proportional to 114.72, 172.06 and 33.55 is: 50.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.72 : 172.06 = 33.55 : x
  2. Step 2: Convert to fraction form
    114.72/172.06 = 33.55/x
  3. Step 3: Cross multiply
    114.72x = 172.06 × 33.55
  4. Step 4: Simplify right side
    114.72x = 5,772.10
  5. Step 5: Solve for x
    x = 5,772.10/114.72
  6. Step 6: Final answer
    x = 50.32

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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.