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Finding the Fourth Proportional to 158.04, 217.95 and 118.68

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Solution

The fourth proportional to 158.04, 217.95 and 118.68 is: 163.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.04 : 217.95 = 118.68 : x
  2. Step 2: Convert to fraction form
    158.04/217.95 = 118.68/x
  3. Step 3: Cross multiply
    158.04x = 217.95 × 118.68
  4. Step 4: Simplify right side
    158.04x = 25,866.31
  5. Step 5: Solve for x
    x = 25,866.31/158.04
  6. Step 6: Final answer
    x = 163.67

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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.