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Finding the Fourth Proportional to 930.31, 1,383.48 and 901.11

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Solution

The fourth proportional to 930.31, 1,383.48 and 901.11 is: 1,340.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    930.31 : 1,383.48 = 901.11 : x
  2. Step 2: Convert to fraction form
    930.31/1,383.48 = 901.11/x
  3. Step 3: Cross multiply
    930.31x = 1,383.48 × 901.11
  4. Step 4: Simplify right side
    930.31x = 1,246,667.66
  5. Step 5: Solve for x
    x = 1,246,667.66/930.31
  6. Step 6: Final answer
    x = 1,340.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.