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Finding the Fourth Proportional to 837.94, 1,157.79 and 808.37

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Solution

The fourth proportional to 837.94, 1,157.79 and 808.37 is: 1,116.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.94 : 1,157.79 = 808.37 : x
  2. Step 2: Convert to fraction form
    837.94/1,157.79 = 808.37/x
  3. Step 3: Cross multiply
    837.94x = 1,157.79 × 808.37
  4. Step 4: Simplify right side
    837.94x = 935,918.66
  5. Step 5: Solve for x
    x = 935,918.66/837.94
  6. Step 6: Final answer
    x = 1,116.93

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1.5x scale

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.