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Finding the Fourth Proportional to 1,618.51, 2,233.66 and 910.43

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Solution

The fourth proportional to 1,618.51, 2,233.66 and 910.43 is: 1,256.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618.51 : 2,233.66 = 910.43 : x
  2. Step 2: Convert to fraction form
    1,618.51/2,233.66 = 910.43/x
  3. Step 3: Cross multiply
    1,618.51x = 2,233.66 × 910.43
  4. Step 4: Simplify right side
    1,618.51x = 2,033,591.07
  5. Step 5: Solve for x
    x = 2,033,591.07/1,618.51
  6. Step 6: Final answer
    x = 1,256.46

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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.