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Finding the Fourth Proportional to 756.74, 1,036.76 and 727.58

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Solution

The fourth proportional to 756.74, 1,036.76 and 727.58 is: 996.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.74 : 1,036.76 = 727.58 : x
  2. Step 2: Convert to fraction form
    756.74/1,036.76 = 727.58/x
  3. Step 3: Cross multiply
    756.74x = 1,036.76 × 727.58
  4. Step 4: Simplify right side
    756.74x = 754,325.84
  5. Step 5: Solve for x
    x = 754,325.84/756.74
  6. Step 6: Final answer
    x = 996.81

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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.