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Finding the Fourth Proportional to 295.58, 443.38 and 158.78

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Solution

The fourth proportional to 295.58, 443.38 and 158.78 is: 238.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.58 : 443.38 = 158.78 : x
  2. Step 2: Convert to fraction form
    295.58/443.38 = 158.78/x
  3. Step 3: Cross multiply
    295.58x = 443.38 × 158.78
  4. Step 4: Simplify right side
    295.58x = 70,399.88
  5. Step 5: Solve for x
    x = 70,399.88/295.58
  6. Step 6: Final answer
    x = 238.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.