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Finding the Fourth Proportional to 884.80, 1,220.50 and 548.83

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Solution

The fourth proportional to 884.80, 1,220.50 and 548.83 is: 757.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.80 : 1,220.50 = 548.83 : x
  2. Step 2: Convert to fraction form
    884.80/1,220.50 = 548.83/x
  3. Step 3: Cross multiply
    884.80x = 1,220.50 × 548.83
  4. Step 4: Simplify right side
    884.80x = 669,847.02
  5. Step 5: Solve for x
    x = 669,847.02/884.80
  6. Step 6: Final answer
    x = 757.06

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1.5x scale

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.