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Finding the Fourth Proportional to 275.90, 378.55 and 273.32

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Solution

The fourth proportional to 275.90, 378.55 and 273.32 is: 375.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.90 : 378.55 = 273.32 : x
  2. Step 2: Convert to fraction form
    275.90/378.55 = 273.32/x
  3. Step 3: Cross multiply
    275.90x = 378.55 × 273.32
  4. Step 4: Simplify right side
    275.90x = 103,465.02
  5. Step 5: Solve for x
    x = 103,465.02/275.90
  6. Step 6: Final answer
    x = 375.01

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.