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Finding the Fourth Proportional to 273.35, 377.21 and 156.91

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Solution

The fourth proportional to 273.35, 377.21 and 156.91 is: 216.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.35 : 377.21 = 156.91 : x
  2. Step 2: Convert to fraction form
    273.35/377.21 = 156.91/x
  3. Step 3: Cross multiply
    273.35x = 377.21 × 156.91
  4. Step 4: Simplify right side
    273.35x = 59,188.02
  5. Step 5: Solve for x
    x = 59,188.02/273.35
  6. Step 6: Final answer
    x = 216.53

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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.