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Finding the Fourth Proportional to 1,695.36, 2,542.52 and 540.80

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Solution

The fourth proportional to 1,695.36, 2,542.52 and 540.80 is: 811.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.36 : 2,542.52 = 540.80 : x
  2. Step 2: Convert to fraction form
    1,695.36/2,542.52 = 540.80/x
  3. Step 3: Cross multiply
    1,695.36x = 2,542.52 × 540.80
  4. Step 4: Simplify right side
    1,695.36x = 1,374,994.82
  5. Step 5: Solve for x
    x = 1,374,994.82/1,695.36
  6. Step 6: Final answer
    x = 811.03

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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.