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Finding the Fourth Proportional to 605.28, 834.60 and 456.16

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Solution

The fourth proportional to 605.28, 834.60 and 456.16 is: 628.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.28 : 834.60 = 456.16 : x
  2. Step 2: Convert to fraction form
    605.28/834.60 = 456.16/x
  3. Step 3: Cross multiply
    605.28x = 834.60 × 456.16
  4. Step 4: Simplify right side
    605.28x = 380,711.14
  5. Step 5: Solve for x
    x = 380,711.14/605.28
  6. Step 6: Final answer
    x = 628.98

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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.