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Finding the Fourth Proportional to 172.02, 236.82 and 149.01

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Solution

The fourth proportional to 172.02, 236.82 and 149.01 is: 205.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.02 : 236.82 = 149.01 : x
  2. Step 2: Convert to fraction form
    172.02/236.82 = 149.01/x
  3. Step 3: Cross multiply
    172.02x = 236.82 × 149.01
  4. Step 4: Simplify right side
    172.02x = 35,288.55
  5. Step 5: Solve for x
    x = 35,288.55/172.02
  6. Step 6: Final answer
    x = 205.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.