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Finding the Fourth Proportional to 935.09, 1,288.11 and 801.87

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Solution

The fourth proportional to 935.09, 1,288.11 and 801.87 is: 1,104.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.09 : 1,288.11 = 801.87 : x
  2. Step 2: Convert to fraction form
    935.09/1,288.11 = 801.87/x
  3. Step 3: Cross multiply
    935.09x = 1,288.11 × 801.87
  4. Step 4: Simplify right side
    935.09x = 1,032,896.77
  5. Step 5: Solve for x
    x = 1,032,896.77/935.09
  6. Step 6: Final answer
    x = 1,104.60

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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.