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Finding the Fourth Proportional to 404.06, 557.37 and 272.84

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Solution

The fourth proportional to 404.06, 557.37 and 272.84 is: 376.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.06 : 557.37 = 272.84 : x
  2. Step 2: Convert to fraction form
    404.06/557.37 = 272.84/x
  3. Step 3: Cross multiply
    404.06x = 557.37 × 272.84
  4. Step 4: Simplify right side
    404.06x = 152,070.04
  5. Step 5: Solve for x
    x = 152,070.04/404.06
  6. Step 6: Final answer
    x = 376.36

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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.