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Finding the Fourth Proportional to 143.36, 214.84 and 104.92

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Solution

The fourth proportional to 143.36, 214.84 and 104.92 is: 157.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.36 : 214.84 = 104.92 : x
  2. Step 2: Convert to fraction form
    143.36/214.84 = 104.92/x
  3. Step 3: Cross multiply
    143.36x = 214.84 × 104.92
  4. Step 4: Simplify right side
    143.36x = 22,541.01
  5. Step 5: Solve for x
    x = 22,541.01/143.36
  6. Step 6: Final answer
    x = 157.23

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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.