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Finding the Fourth Proportional to 368.28, 552.48 and 276.68

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Solution

The fourth proportional to 368.28, 552.48 and 276.68 is: 415.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.28 : 552.48 = 276.68 : x
  2. Step 2: Convert to fraction form
    368.28/552.48 = 276.68/x
  3. Step 3: Cross multiply
    368.28x = 552.48 × 276.68
  4. Step 4: Simplify right side
    368.28x = 152,860.17
  5. Step 5: Solve for x
    x = 152,860.17/368.28
  6. Step 6: Final answer
    x = 415.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.