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Finding the Fourth Proportional to 159.16, 238.66 and 56.44

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Solution

The fourth proportional to 159.16, 238.66 and 56.44 is: 84.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.16 : 238.66 = 56.44 : x
  2. Step 2: Convert to fraction form
    159.16/238.66 = 56.44/x
  3. Step 3: Cross multiply
    159.16x = 238.66 × 56.44
  4. Step 4: Simplify right side
    159.16x = 13,469.69
  5. Step 5: Solve for x
    x = 13,469.69/159.16
  6. Step 6: Final answer
    x = 84.63

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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.