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Finding the Fourth Proportional to 438.77, 605.19 and 273.07

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Solution

The fourth proportional to 438.77, 605.19 and 273.07 is: 376.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.77 : 605.19 = 273.07 : x
  2. Step 2: Convert to fraction form
    438.77/605.19 = 273.07/x
  3. Step 3: Cross multiply
    438.77x = 605.19 × 273.07
  4. Step 4: Simplify right side
    438.77x = 165,256.21
  5. Step 5: Solve for x
    x = 165,256.21/438.77
  6. Step 6: Final answer
    x = 376.64

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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.