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Finding the Fourth Proportional to 457.40, 680.70 and 452.60

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Solution

The fourth proportional to 457.40, 680.70 and 452.60 is: 673.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.40 : 680.70 = 452.60 : x
  2. Step 2: Convert to fraction form
    457.40/680.70 = 452.60/x
  3. Step 3: Cross multiply
    457.40x = 680.70 × 452.60
  4. Step 4: Simplify right side
    457.40x = 308,084.82
  5. Step 5: Solve for x
    x = 308,084.82/457.40
  6. Step 6: Final answer
    x = 673.56

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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.