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Finding the Fourth Proportional to 577.38, 790.60 and 552.80

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Solution

The fourth proportional to 577.38, 790.60 and 552.80 is: 756.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.38 : 790.60 = 552.80 : x
  2. Step 2: Convert to fraction form
    577.38/790.60 = 552.80/x
  3. Step 3: Cross multiply
    577.38x = 790.60 × 552.80
  4. Step 4: Simplify right side
    577.38x = 437,043.68
  5. Step 5: Solve for x
    x = 437,043.68/577.38
  6. Step 6: Final answer
    x = 756.94

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.