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Finding the Fourth Proportional to 936.75, 1,283.33 and 901.69

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Solution

The fourth proportional to 936.75, 1,283.33 and 901.69 is: 1,235.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.75 : 1,283.33 = 901.69 : x
  2. Step 2: Convert to fraction form
    936.75/1,283.33 = 901.69/x
  3. Step 3: Cross multiply
    936.75x = 1,283.33 × 901.69
  4. Step 4: Simplify right side
    936.75x = 1,157,172.09
  5. Step 5: Solve for x
    x = 1,157,172.09/936.75
  6. Step 6: Final answer
    x = 1,235.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.