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Finding the Fourth Proportional to 155.26, 231.55 and 141.49

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Solution

The fourth proportional to 155.26, 231.55 and 141.49 is: 211.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.26 : 231.55 = 141.49 : x
  2. Step 2: Convert to fraction form
    155.26/231.55 = 141.49/x
  3. Step 3: Cross multiply
    155.26x = 231.55 × 141.49
  4. Step 4: Simplify right side
    155.26x = 32,762.01
  5. Step 5: Solve for x
    x = 32,762.01/155.26
  6. Step 6: Final answer
    x = 211.01

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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.