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Finding the Fourth Proportional to 574.83, 863.46 and 437.40

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Solution

The fourth proportional to 574.83, 863.46 and 437.40 is: 657.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.83 : 863.46 = 437.40 : x
  2. Step 2: Convert to fraction form
    574.83/863.46 = 437.40/x
  3. Step 3: Cross multiply
    574.83x = 863.46 × 437.40
  4. Step 4: Simplify right side
    574.83x = 377,677.40
  5. Step 5: Solve for x
    x = 377,677.40/574.83
  6. Step 6: Final answer
    x = 657.02

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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.