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Finding the Fourth Proportional to 1,651.60, 2,477.62 and 540.90

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Solution

The fourth proportional to 1,651.60, 2,477.62 and 540.90 is: 811.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.60 : 2,477.62 = 540.90 : x
  2. Step 2: Convert to fraction form
    1,651.60/2,477.62 = 540.90/x
  3. Step 3: Cross multiply
    1,651.60x = 2,477.62 × 540.90
  4. Step 4: Simplify right side
    1,651.60x = 1,340,144.66
  5. Step 5: Solve for x
    x = 1,340,144.66/1,651.60
  6. Step 6: Final answer
    x = 811.42

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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.