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Finding the Fourth Proportional to 158.59, 218.48 and 117.03

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Solution

The fourth proportional to 158.59, 218.48 and 117.03 is: 161.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.59 : 218.48 = 117.03 : x
  2. Step 2: Convert to fraction form
    158.59/218.48 = 117.03/x
  3. Step 3: Cross multiply
    158.59x = 218.48 × 117.03
  4. Step 4: Simplify right side
    158.59x = 25,568.13
  5. Step 5: Solve for x
    x = 25,568.13/158.59
  6. Step 6: Final answer
    x = 161.22

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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.