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Finding the Fourth Proportional to 425.80, 636.05 and 303.04

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Solution

The fourth proportional to 425.80, 636.05 and 303.04 is: 452.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.80 : 636.05 = 303.04 : x
  2. Step 2: Convert to fraction form
    425.80/636.05 = 303.04/x
  3. Step 3: Cross multiply
    425.80x = 636.05 × 303.04
  4. Step 4: Simplify right side
    425.80x = 192,748.59
  5. Step 5: Solve for x
    x = 192,748.59/425.80
  6. Step 6: Final answer
    x = 452.67

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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.