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Finding the Fourth Proportional to 1,662.60, 2,494.47 and 738.80

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Solution

The fourth proportional to 1,662.60, 2,494.47 and 738.80 is: 1,108.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,662.60 : 2,494.47 = 738.80 : x
  2. Step 2: Convert to fraction form
    1,662.60/2,494.47 = 738.80/x
  3. Step 3: Cross multiply
    1,662.60x = 2,494.47 × 738.80
  4. Step 4: Simplify right side
    1,662.60x = 1,842,901.96
  5. Step 5: Solve for x
    x = 1,842,901.96/1,662.60
  6. Step 6: Final answer
    x = 1,108.45

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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.