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Finding the Fourth Proportional to 1,656.45, 2,285.91 and 910.46

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Solution

The fourth proportional to 1,656.45, 2,285.91 and 910.46 is: 1,256.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,656.45 : 2,285.91 = 910.46 : x
  2. Step 2: Convert to fraction form
    1,656.45/2,285.91 = 910.46/x
  3. Step 3: Cross multiply
    1,656.45x = 2,285.91 × 910.46
  4. Step 4: Simplify right side
    1,656.45x = 2,081,229.62
  5. Step 5: Solve for x
    x = 2,081,229.62/1,656.45
  6. Step 6: Final answer
    x = 1,256.44

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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.