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Finding the Fourth Proportional to 534.60, 801.90 and 523.80

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Solution

The fourth proportional to 534.60, 801.90 and 523.80 is: 785.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.60 : 801.90 = 523.80 : x
  2. Step 2: Convert to fraction form
    534.60/801.90 = 523.80/x
  3. Step 3: Cross multiply
    534.60x = 801.90 × 523.80
  4. Step 4: Simplify right side
    534.60x = 420,035.22
  5. Step 5: Solve for x
    x = 420,035.22/534.60
  6. Step 6: Final answer
    x = 785.70

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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.