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Finding the Fourth Proportional to 173.02, 259.32 and 121.38

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Solution

The fourth proportional to 173.02, 259.32 and 121.38 is: 181.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.02 : 259.32 = 121.38 : x
  2. Step 2: Convert to fraction form
    173.02/259.32 = 121.38/x
  3. Step 3: Cross multiply
    173.02x = 259.32 × 121.38
  4. Step 4: Simplify right side
    173.02x = 31,476.26
  5. Step 5: Solve for x
    x = 31,476.26/173.02
  6. Step 6: Final answer
    x = 181.92

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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.