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Finding the Fourth Proportional to 1,711.05, 2,565.81 and 540.72

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Solution

The fourth proportional to 1,711.05, 2,565.81 and 540.72 is: 810.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,711.05 : 2,565.81 = 540.72 : x
  2. Step 2: Convert to fraction form
    1,711.05/2,565.81 = 540.72/x
  3. Step 3: Cross multiply
    1,711.05x = 2,565.81 × 540.72
  4. Step 4: Simplify right side
    1,711.05x = 1,387,384.78
  5. Step 5: Solve for x
    x = 1,387,384.78/1,711.05
  6. Step 6: Final answer
    x = 810.84

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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.