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Finding the Fourth Proportional to 162.39, 244.51 and 143.26

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Solution

The fourth proportional to 162.39, 244.51 and 143.26 is: 215.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.39 : 244.51 = 143.26 : x
  2. Step 2: Convert to fraction form
    162.39/244.51 = 143.26/x
  3. Step 3: Cross multiply
    162.39x = 244.51 × 143.26
  4. Step 4: Simplify right side
    162.39x = 35,026.56
  5. Step 5: Solve for x
    x = 35,026.56/162.39
  6. Step 6: Final answer
    x = 215.69

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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.