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Finding the Fourth Proportional to 1,716.11, 2,574.15 and 620.47

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Solution

The fourth proportional to 1,716.11, 2,574.15 and 620.47 is: 930.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,716.11 : 2,574.15 = 620.47 : x
  2. Step 2: Convert to fraction form
    1,716.11/2,574.15 = 620.47/x
  3. Step 3: Cross multiply
    1,716.11x = 2,574.15 × 620.47
  4. Step 4: Simplify right side
    1,716.11x = 1,597,182.85
  5. Step 5: Solve for x
    x = 1,597,182.85/1,716.11
  6. Step 6: Final answer
    x = 930.70

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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.