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Finding the Fourth Proportional to 162.95, 245.57 and 136.15

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Solution

The fourth proportional to 162.95, 245.57 and 136.15 is: 205.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.95 : 245.57 = 136.15 : x
  2. Step 2: Convert to fraction form
    162.95/245.57 = 136.15/x
  3. Step 3: Cross multiply
    162.95x = 245.57 × 136.15
  4. Step 4: Simplify right side
    162.95x = 33,433.06
  5. Step 5: Solve for x
    x = 33,433.06/162.95
  6. Step 6: Final answer
    x = 205.18

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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.