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Finding the Fourth Proportional to 172.98, 260.41 and 158.10

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Solution

The fourth proportional to 172.98, 260.41 and 158.10 is: 238.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.98 : 260.41 = 158.10 : x
  2. Step 2: Convert to fraction form
    172.98/260.41 = 158.10/x
  3. Step 3: Cross multiply
    172.98x = 260.41 × 158.10
  4. Step 4: Simplify right side
    172.98x = 41,170.82
  5. Step 5: Solve for x
    x = 41,170.82/172.98
  6. Step 6: Final answer
    x = 238.01

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.