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Finding the Fourth Proportional to 456.70, 629.67 and 434.62

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Solution

The fourth proportional to 456.70, 629.67 and 434.62 is: 599.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.70 : 629.67 = 434.62 : x
  2. Step 2: Convert to fraction form
    456.70/629.67 = 434.62/x
  3. Step 3: Cross multiply
    456.70x = 629.67 × 434.62
  4. Step 4: Simplify right side
    456.70x = 273,667.18
  5. Step 5: Solve for x
    x = 273,667.18/456.70
  6. Step 6: Final answer
    x = 599.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.