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Finding the Fourth Proportional to 1,656.97, 2,285.82 and 957.94

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Solution

The fourth proportional to 1,656.97, 2,285.82 and 957.94 is: 1,321.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,656.97 : 2,285.82 = 957.94 : x
  2. Step 2: Convert to fraction form
    1,656.97/2,285.82 = 957.94/x
  3. Step 3: Cross multiply
    1,656.97x = 2,285.82 × 957.94
  4. Step 4: Simplify right side
    1,656.97x = 2,189,672.70
  5. Step 5: Solve for x
    x = 2,189,672.70/1,656.97
  6. Step 6: Final answer
    x = 1,321.49

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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.