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Finding the Fourth Proportional to 482.88, 666.37 and 273.12

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Solution

The fourth proportional to 482.88, 666.37 and 273.12 is: 376.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.88 : 666.37 = 273.12 : x
  2. Step 2: Convert to fraction form
    482.88/666.37 = 273.12/x
  3. Step 3: Cross multiply
    482.88x = 666.37 × 273.12
  4. Step 4: Simplify right side
    482.88x = 181,997.61
  5. Step 5: Solve for x
    x = 181,997.61/482.88
  6. Step 6: Final answer
    x = 376.90

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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.