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Finding the Fourth Proportional to 756.69, 1,044.12 and 495.06

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Solution

The fourth proportional to 756.69, 1,044.12 and 495.06 is: 683.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.69 : 1,044.12 = 495.06 : x
  2. Step 2: Convert to fraction form
    756.69/1,044.12 = 495.06/x
  3. Step 3: Cross multiply
    756.69x = 1,044.12 × 495.06
  4. Step 4: Simplify right side
    756.69x = 516,902.05
  5. Step 5: Solve for x
    x = 516,902.05/756.69
  6. Step 6: Final answer
    x = 683.11

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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.