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Finding the Fourth Proportional to 756.61, 1,044.41 and 535.79

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Solution

The fourth proportional to 756.61, 1,044.41 and 535.79 is: 739.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.61 : 1,044.41 = 535.79 : x
  2. Step 2: Convert to fraction form
    756.61/1,044.41 = 535.79/x
  3. Step 3: Cross multiply
    756.61x = 1,044.41 × 535.79
  4. Step 4: Simplify right side
    756.61x = 559,584.43
  5. Step 5: Solve for x
    x = 559,584.43/756.61
  6. Step 6: Final answer
    x = 739.59

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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.