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Finding the Fourth Proportional to 273.30, 377.19 and 156.84

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Solution

The fourth proportional to 273.30, 377.19 and 156.84 is: 216.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.30 : 377.19 = 156.84 : x
  2. Step 2: Convert to fraction form
    273.30/377.19 = 156.84/x
  3. Step 3: Cross multiply
    273.30x = 377.19 × 156.84
  4. Step 4: Simplify right side
    273.30x = 59,158.48
  5. Step 5: Solve for x
    x = 59,158.48/273.30
  6. Step 6: Final answer
    x = 216.46

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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.