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Finding the Fourth Proportional to 1,611.11, 2,223.31 and 902.98

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Solution

The fourth proportional to 1,611.11, 2,223.31 and 902.98 is: 1,246.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.11 : 2,223.31 = 902.98 : x
  2. Step 2: Convert to fraction form
    1,611.11/2,223.31 = 902.98/x
  3. Step 3: Cross multiply
    1,611.11x = 2,223.31 × 902.98
  4. Step 4: Simplify right side
    1,611.11x = 2,007,604.46
  5. Step 5: Solve for x
    x = 2,007,604.46/1,611.11
  6. Step 6: Final answer
    x = 1,246.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.