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Finding the Fourth Proportional to 172.09, 237.34 and 145.93

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Solution

The fourth proportional to 172.09, 237.34 and 145.93 is: 201.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.09 : 237.34 = 145.93 : x
  2. Step 2: Convert to fraction form
    172.09/237.34 = 145.93/x
  3. Step 3: Cross multiply
    172.09x = 237.34 × 145.93
  4. Step 4: Simplify right side
    172.09x = 34,635.03
  5. Step 5: Solve for x
    x = 34,635.03/172.09
  6. Step 6: Final answer
    x = 201.26

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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.