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Finding the Fourth Proportional to 175.37, 263.21 and 121.10

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Solution

The fourth proportional to 175.37, 263.21 and 121.10 is: 181.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.37 : 263.21 = 121.10 : x
  2. Step 2: Convert to fraction form
    175.37/263.21 = 121.10/x
  3. Step 3: Cross multiply
    175.37x = 263.21 × 121.10
  4. Step 4: Simplify right side
    175.37x = 31,872.81
  5. Step 5: Solve for x
    x = 31,872.81/175.37
  6. Step 6: Final answer
    x = 181.75

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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.