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Finding the Fourth Proportional to 365.99, 548.95 and 119.28

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Solution

The fourth proportional to 365.99, 548.95 and 119.28 is: 178.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.99 : 548.95 = 119.28 : x
  2. Step 2: Convert to fraction form
    365.99/548.95 = 119.28/x
  3. Step 3: Cross multiply
    365.99x = 548.95 × 119.28
  4. Step 4: Simplify right side
    365.99x = 65,478.76
  5. Step 5: Solve for x
    x = 65,478.76/365.99
  6. Step 6: Final answer
    x = 178.91

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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.