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Finding the Fourth Proportional to 1,807.23, 2,711.16 and 711.57

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Solution

The fourth proportional to 1,807.23, 2,711.16 and 711.57 is: 1,067.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.23 : 2,711.16 = 711.57 : x
  2. Step 2: Convert to fraction form
    1,807.23/2,711.16 = 711.57/x
  3. Step 3: Cross multiply
    1,807.23x = 2,711.16 × 711.57
  4. Step 4: Simplify right side
    1,807.23x = 1,929,180.12
  5. Step 5: Solve for x
    x = 1,929,180.12/1,807.23
  6. Step 6: Final answer
    x = 1,067.48

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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.