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Finding the Fourth Proportional to 158.85, 236.63 and 144.81

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Solution

The fourth proportional to 158.85, 236.63 and 144.81 is: 215.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.85 : 236.63 = 144.81 : x
  2. Step 2: Convert to fraction form
    158.85/236.63 = 144.81/x
  3. Step 3: Cross multiply
    158.85x = 236.63 × 144.81
  4. Step 4: Simplify right side
    158.85x = 34,266.75
  5. Step 5: Solve for x
    x = 34,266.75/158.85
  6. Step 6: Final answer
    x = 215.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.