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Finding the Fourth Proportional to 273.65, 377.63 and 155.63

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Solution

The fourth proportional to 273.65, 377.63 and 155.63 is: 214.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.65 : 377.63 = 155.63 : x
  2. Step 2: Convert to fraction form
    273.65/377.63 = 155.63/x
  3. Step 3: Cross multiply
    273.65x = 377.63 × 155.63
  4. Step 4: Simplify right side
    273.65x = 58,770.56
  5. Step 5: Solve for x
    x = 58,770.56/273.65
  6. Step 6: Final answer
    x = 214.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.