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Finding the Fourth Proportional to 837.70, 1,156.41 and 539.28

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Solution

The fourth proportional to 837.70, 1,156.41 and 539.28 is: 744.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.70 : 1,156.41 = 539.28 : x
  2. Step 2: Convert to fraction form
    837.70/1,156.41 = 539.28/x
  3. Step 3: Cross multiply
    837.70x = 1,156.41 × 539.28
  4. Step 4: Simplify right side
    837.70x = 623,628.78
  5. Step 5: Solve for x
    x = 623,628.78/837.70
  6. Step 6: Final answer
    x = 744.45

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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.