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Finding the Fourth Proportional to 273.58, 377.50 and 155.55

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Solution

The fourth proportional to 273.58, 377.50 and 155.55 is: 214.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.58 : 377.50 = 155.55 : x
  2. Step 2: Convert to fraction form
    273.58/377.50 = 155.55/x
  3. Step 3: Cross multiply
    273.58x = 377.50 × 155.55
  4. Step 4: Simplify right side
    273.58x = 58,720.13
  5. Step 5: Solve for x
    x = 58,720.13/273.58
  6. Step 6: Final answer
    x = 214.64

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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.