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Finding the Fourth Proportional to 1,029.71, 1,541.84 and 541.28

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Solution

The fourth proportional to 1,029.71, 1,541.84 and 541.28 is: 810.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029.71 : 1,541.84 = 541.28 : x
  2. Step 2: Convert to fraction form
    1,029.71/1,541.84 = 541.28/x
  3. Step 3: Cross multiply
    1,029.71x = 1,541.84 × 541.28
  4. Step 4: Simplify right side
    1,029.71x = 834,568.30
  5. Step 5: Solve for x
    x = 834,568.30/1,029.71
  6. Step 6: Final answer
    x = 810.49

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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.