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Finding the Fourth Proportional to 574.50, 855.18 and 547.96

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Solution

The fourth proportional to 574.50, 855.18 and 547.96 is: 815.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.50 : 855.18 = 547.96 : x
  2. Step 2: Convert to fraction form
    574.50/855.18 = 547.96/x
  3. Step 3: Cross multiply
    574.50x = 855.18 × 547.96
  4. Step 4: Simplify right side
    574.50x = 468,604.43
  5. Step 5: Solve for x
    x = 468,604.43/574.50
  6. Step 6: Final answer
    x = 815.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.