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Finding the Fourth Proportional to 1,711.56, 2,565.72 and 556.56

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Solution

The fourth proportional to 1,711.56, 2,565.72 and 556.56 is: 834.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,711.56 : 2,565.72 = 556.56 : x
  2. Step 2: Convert to fraction form
    1,711.56/2,565.72 = 556.56/x
  3. Step 3: Cross multiply
    1,711.56x = 2,565.72 × 556.56
  4. Step 4: Simplify right side
    1,711.56x = 1,427,977.12
  5. Step 5: Solve for x
    x = 1,427,977.12/1,711.56
  6. Step 6: Final answer
    x = 834.31

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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.