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Finding the Fourth Proportional to 277.85, 417.06 and 191.32

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Solution

The fourth proportional to 277.85, 417.06 and 191.32 is: 287.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.85 : 417.06 = 191.32 : x
  2. Step 2: Convert to fraction form
    277.85/417.06 = 191.32/x
  3. Step 3: Cross multiply
    277.85x = 417.06 × 191.32
  4. Step 4: Simplify right side
    277.85x = 79,790.88
  5. Step 5: Solve for x
    x = 79,790.88/277.85
  6. Step 6: Final answer
    x = 287.17

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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.