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Finding the Fourth Proportional to 159.56, 218.94 and 158.03

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Solution

The fourth proportional to 159.56, 218.94 and 158.03 is: 216.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.56 : 218.94 = 158.03 : x
  2. Step 2: Convert to fraction form
    159.56/218.94 = 158.03/x
  3. Step 3: Cross multiply
    159.56x = 218.94 × 158.03
  4. Step 4: Simplify right side
    159.56x = 34,598.22
  5. Step 5: Solve for x
    x = 34,598.22/159.56
  6. Step 6: Final answer
    x = 216.84

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.