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Finding the Fourth Proportional to 155.94, 216.69 and 154.26

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Solution

The fourth proportional to 155.94, 216.69 and 154.26 is: 214.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.94 : 216.69 = 154.26 : x
  2. Step 2: Convert to fraction form
    155.94/216.69 = 154.26/x
  3. Step 3: Cross multiply
    155.94x = 216.69 × 154.26
  4. Step 4: Simplify right side
    155.94x = 33,425.52
  5. Step 5: Solve for x
    x = 33,425.52/155.94
  6. Step 6: Final answer
    x = 214.35

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.