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Finding the Fourth Proportional to 1,651.07, 2,476.80 and 677.31

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Solution

The fourth proportional to 1,651.07, 2,476.80 and 677.31 is: 1,016.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.07 : 2,476.80 = 677.31 : x
  2. Step 2: Convert to fraction form
    1,651.07/2,476.80 = 677.31/x
  3. Step 3: Cross multiply
    1,651.07x = 2,476.80 × 677.31
  4. Step 4: Simplify right side
    1,651.07x = 1,677,561.41
  5. Step 5: Solve for x
    x = 1,677,561.41/1,651.07
  6. Step 6: Final answer
    x = 1,016.05

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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.