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Finding the Fourth Proportional to 534.60, 800.46 and 387.93

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Solution

The fourth proportional to 534.60, 800.46 and 387.93 is: 580.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.60 : 800.46 = 387.93 : x
  2. Step 2: Convert to fraction form
    534.60/800.46 = 387.93/x
  3. Step 3: Cross multiply
    534.60x = 800.46 × 387.93
  4. Step 4: Simplify right side
    534.60x = 310,522.45
  5. Step 5: Solve for x
    x = 310,522.45/534.60
  6. Step 6: Final answer
    x = 580.85

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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.