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Finding the Fourth Proportional to 893.89, 1,340.97 and 277.65

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Solution

The fourth proportional to 893.89, 1,340.97 and 277.65 is: 416.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.89 : 1,340.97 = 277.65 : x
  2. Step 2: Convert to fraction form
    893.89/1,340.97 = 277.65/x
  3. Step 3: Cross multiply
    893.89x = 1,340.97 × 277.65
  4. Step 4: Simplify right side
    893.89x = 372,312.23
  5. Step 5: Solve for x
    x = 372,312.23/893.89
  6. Step 6: Final answer
    x = 416.51

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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.