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Finding the Fourth Proportional to 262.87, 362.78 and 157.99

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Solution

The fourth proportional to 262.87, 362.78 and 157.99 is: 218.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.87 : 362.78 = 157.99 : x
  2. Step 2: Convert to fraction form
    262.87/362.78 = 157.99/x
  3. Step 3: Cross multiply
    262.87x = 362.78 × 157.99
  4. Step 4: Simplify right side
    262.87x = 57,314.82
  5. Step 5: Solve for x
    x = 57,314.82/262.87
  6. Step 6: Final answer
    x = 218.03

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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.