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Finding the Fourth Proportional to 158.26, 235.87 and 155.06

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Solution

The fourth proportional to 158.26, 235.87 and 155.06 is: 231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.26 : 235.87 = 155.06 : x
  2. Step 2: Convert to fraction form
    158.26/235.87 = 155.06/x
  3. Step 3: Cross multiply
    158.26x = 235.87 × 155.06
  4. Step 4: Simplify right side
    158.26x = 36,573.23
  5. Step 5: Solve for x
    x = 36,573.23/158.26
  6. Step 6: Final answer
    x = 231.10

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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.