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Finding the Fourth Proportional to 737.60, 1,018.80 and 540.80

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Solution

The fourth proportional to 737.60, 1,018.80 and 540.80 is: 746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.60 : 1,018.80 = 540.80 : x
  2. Step 2: Convert to fraction form
    737.60/1,018.80 = 540.80/x
  3. Step 3: Cross multiply
    737.60x = 1,018.80 × 540.80
  4. Step 4: Simplify right side
    737.60x = 550,967.04
  5. Step 5: Solve for x
    x = 550,967.04/737.60
  6. Step 6: Final answer
    x = 746.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.