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Finding the Fourth Proportional to 158.10, 236.08 and 155.06

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Solution

The fourth proportional to 158.10, 236.08 and 155.06 is: 231.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.10 : 236.08 = 155.06 : x
  2. Step 2: Convert to fraction form
    158.10/236.08 = 155.06/x
  3. Step 3: Cross multiply
    158.10x = 236.08 × 155.06
  4. Step 4: Simplify right side
    158.10x = 36,606.56
  5. Step 5: Solve for x
    x = 36,606.56/158.10
  6. Step 6: Final answer
    x = 231.54

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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.