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Finding the Fourth Proportional to 368.79, 550.87 and 270.42

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Solution

The fourth proportional to 368.79, 550.87 and 270.42 is: 403.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.79 : 550.87 = 270.42 : x
  2. Step 2: Convert to fraction form
    368.79/550.87 = 270.42/x
  3. Step 3: Cross multiply
    368.79x = 550.87 × 270.42
  4. Step 4: Simplify right side
    368.79x = 148,965.59
  5. Step 5: Solve for x
    x = 148,965.59/368.79
  6. Step 6: Final answer
    x = 403.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.