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Finding the Fourth Proportional to 277.95, 417.36 and 239.87

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Solution

The fourth proportional to 277.95, 417.36 and 239.87 is: 360.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.95 : 417.36 = 239.87 : x
  2. Step 2: Convert to fraction form
    277.95/417.36 = 239.87/x
  3. Step 3: Cross multiply
    277.95x = 417.36 × 239.87
  4. Step 4: Simplify right side
    277.95x = 100,112.14
  5. Step 5: Solve for x
    x = 100,112.14/277.95
  6. Step 6: Final answer
    x = 360.18

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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.