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Finding the Fourth Proportional to 273.07, 376.80 and 156.61

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Solution

The fourth proportional to 273.07, 376.80 and 156.61 is: 216.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.07 : 376.80 = 156.61 : x
  2. Step 2: Convert to fraction form
    273.07/376.80 = 156.61/x
  3. Step 3: Cross multiply
    273.07x = 376.80 × 156.61
  4. Step 4: Simplify right side
    273.07x = 59,008.76
  5. Step 5: Solve for x
    x = 59,008.76/273.07
  6. Step 6: Final answer
    x = 216.10

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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.