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Finding the Fourth Proportional to 277.94, 416.87 and 72.51

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Solution

The fourth proportional to 277.94, 416.87 and 72.51 is: 108.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.94 : 416.87 = 72.51 : x
  2. Step 2: Convert to fraction form
    277.94/416.87 = 72.51/x
  3. Step 3: Cross multiply
    277.94x = 416.87 × 72.51
  4. Step 4: Simplify right side
    277.94x = 30,227.24
  5. Step 5: Solve for x
    x = 30,227.24/277.94
  6. Step 6: Final answer
    x = 108.75

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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.