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Finding the Fourth Proportional to 893.51, 1,340.47 and 277.22

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Solution

The fourth proportional to 893.51, 1,340.47 and 277.22 is: 415.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.51 : 1,340.47 = 277.22 : x
  2. Step 2: Convert to fraction form
    893.51/1,340.47 = 277.22/x
  3. Step 3: Cross multiply
    893.51x = 1,340.47 × 277.22
  4. Step 4: Simplify right side
    893.51x = 371,607.23
  5. Step 5: Solve for x
    x = 371,607.23/893.51
  6. Step 6: Final answer
    x = 415.90

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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.