Home / 1,214.54-1,821.97-474.15

Finding the Fourth Proportional to 1,214.54, 1,821.97 and 474.15

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Solution

The fourth proportional to 1,214.54, 1,821.97 and 474.15 is: 711.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.54 : 1,821.97 = 474.15 : x
  2. Step 2: Convert to fraction form
    1,214.54/1,821.97 = 474.15/x
  3. Step 3: Cross multiply
    1,214.54x = 1,821.97 × 474.15
  4. Step 4: Simplify right side
    1,214.54x = 863,893.17
  5. Step 5: Solve for x
    x = 863,893.17/1,214.54
  6. Step 6: Final answer
    x = 711.29

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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.