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Finding the Fourth Proportional to 1,227.84, 1,696.32 and 1,210.56

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Solution

The fourth proportional to 1,227.84, 1,696.32 and 1,210.56 is: 1,672.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.84 : 1,696.32 = 1,210.56 : x
  2. Step 2: Convert to fraction form
    1,227.84/1,696.32 = 1,210.56/x
  3. Step 3: Cross multiply
    1,227.84x = 1,696.32 × 1,210.56
  4. Step 4: Simplify right side
    1,227.84x = 2,053,497.14
  5. Step 5: Solve for x
    x = 2,053,497.14/1,227.84
  6. Step 6: Final answer
    x = 1,672.45

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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.