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Finding the Fourth Proportional to 117.38, 175.23 and 100.37

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Solution

The fourth proportional to 117.38, 175.23 and 100.37 is: 149.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.38 : 175.23 = 100.37 : x
  2. Step 2: Convert to fraction form
    117.38/175.23 = 100.37/x
  3. Step 3: Cross multiply
    117.38x = 175.23 × 100.37
  4. Step 4: Simplify right side
    117.38x = 17,586.96
  5. Step 5: Solve for x
    x = 17,586.96/117.38
  6. Step 6: Final answer
    x = 149.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.