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Finding the Fourth Proportional to 1,001.91, 1,382.77 and 608.94

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Solution

The fourth proportional to 1,001.91, 1,382.77 and 608.94 is: 840.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.91 : 1,382.77 = 608.94 : x
  2. Step 2: Convert to fraction form
    1,001.91/1,382.77 = 608.94/x
  3. Step 3: Cross multiply
    1,001.91x = 1,382.77 × 608.94
  4. Step 4: Simplify right side
    1,001.91x = 842,023.96
  5. Step 5: Solve for x
    x = 842,023.96/1,001.91
  6. Step 6: Final answer
    x = 840.42

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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.