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Finding the Fourth Proportional to 162.28, 244.29 and 139.95

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Solution

The fourth proportional to 162.28, 244.29 and 139.95 is: 210.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.28 : 244.29 = 139.95 : x
  2. Step 2: Convert to fraction form
    162.28/244.29 = 139.95/x
  3. Step 3: Cross multiply
    162.28x = 244.29 × 139.95
  4. Step 4: Simplify right side
    162.28x = 34,188.39
  5. Step 5: Solve for x
    x = 34,188.39/162.28
  6. Step 6: Final answer
    x = 210.68

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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.