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Finding the Fourth Proportional to 189.84, 262 and 116.16

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Solution

The fourth proportional to 189.84, 262 and 116.16 is: 160.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    189.84 : 262 = 116.16 : x
  2. Step 2: Convert to fraction form
    189.84/262 = 116.16/x
  3. Step 3: Cross multiply
    189.84x = 262 × 116.16
  4. Step 4: Simplify right side
    189.84x = 30,433.92
  5. Step 5: Solve for x
    x = 30,433.92/189.84
  6. Step 6: Final answer
    x = 160.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.