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Finding the Fourth Proportional to 874.51, 1,204.20 and 756.27

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Solution

The fourth proportional to 874.51, 1,204.20 and 756.27 is: 1,041.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    874.51 : 1,204.20 = 756.27 : x
  2. Step 2: Convert to fraction form
    874.51/1,204.20 = 756.27/x
  3. Step 3: Cross multiply
    874.51x = 1,204.20 × 756.27
  4. Step 4: Simplify right side
    874.51x = 910,700.33
  5. Step 5: Solve for x
    x = 910,700.33/874.51
  6. Step 6: Final answer
    x = 1,041.38

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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.