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Finding the Fourth Proportional to 437.45, 654.50 and 270.70

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Solution

The fourth proportional to 437.45, 654.50 and 270.70 is: 405.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.45 : 654.50 = 270.70 : x
  2. Step 2: Convert to fraction form
    437.45/654.50 = 270.70/x
  3. Step 3: Cross multiply
    437.45x = 654.50 × 270.70
  4. Step 4: Simplify right side
    437.45x = 177,172.19
  5. Step 5: Solve for x
    x = 177,172.19/437.45
  6. Step 6: Final answer
    x = 405.02

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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.