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Finding the Fourth Proportional to 756.81, 1,133.19 and 572.94

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Solution

The fourth proportional to 756.81, 1,133.19 and 572.94 is: 857.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.81 : 1,133.19 = 572.94 : x
  2. Step 2: Convert to fraction form
    756.81/1,133.19 = 572.94/x
  3. Step 3: Cross multiply
    756.81x = 1,133.19 × 572.94
  4. Step 4: Simplify right side
    756.81x = 649,249.88
  5. Step 5: Solve for x
    x = 649,249.88/756.81
  6. Step 6: Final answer
    x = 857.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.