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Finding the Fourth Proportional to 1,656.65, 2,286.18 and 910.49

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Solution

The fourth proportional to 1,656.65, 2,286.18 and 910.49 is: 1,256.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,656.65 : 2,286.18 = 910.49 : x
  2. Step 2: Convert to fraction form
    1,656.65/2,286.18 = 910.49/x
  3. Step 3: Cross multiply
    1,656.65x = 2,286.18 × 910.49
  4. Step 4: Simplify right side
    1,656.65x = 2,081,544.03
  5. Step 5: Solve for x
    x = 2,081,544.03/1,656.65
  6. Step 6: Final answer
    x = 1,256.48

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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.