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Finding the Fourth Proportional to 163.99, 244.85 and 143.48

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Solution

The fourth proportional to 163.99, 244.85 and 143.48 is: 214.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.99 : 244.85 = 143.48 : x
  2. Step 2: Convert to fraction form
    163.99/244.85 = 143.48/x
  3. Step 3: Cross multiply
    163.99x = 244.85 × 143.48
  4. Step 4: Simplify right side
    163.99x = 35,130.36
  5. Step 5: Solve for x
    x = 35,130.36/163.99
  6. Step 6: Final answer
    x = 214.23

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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.