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Finding the Fourth Proportional to 1,651.88, 2,478.02 and 540.92

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Solution

The fourth proportional to 1,651.88, 2,478.02 and 540.92 is: 811.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.88 : 2,478.02 = 540.92 : x
  2. Step 2: Convert to fraction form
    1,651.88/2,478.02 = 540.92/x
  3. Step 3: Cross multiply
    1,651.88x = 2,478.02 × 540.92
  4. Step 4: Simplify right side
    1,651.88x = 1,340,410.58
  5. Step 5: Solve for x
    x = 1,340,410.58/1,651.88
  6. Step 6: Final answer
    x = 811.45

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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.