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Finding the Fourth Proportional to 143.95, 216.98 and 135.59

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Solution

The fourth proportional to 143.95, 216.98 and 135.59 is: 204.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.95 : 216.98 = 135.59 : x
  2. Step 2: Convert to fraction form
    143.95/216.98 = 135.59/x
  3. Step 3: Cross multiply
    143.95x = 216.98 × 135.59
  4. Step 4: Simplify right side
    143.95x = 29,419.57
  5. Step 5: Solve for x
    x = 29,419.57/143.95
  6. Step 6: Final answer
    x = 204.38

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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.