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Finding the Fourth Proportional to 634.45, 953.70 and 453.10

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Solution

The fourth proportional to 634.45, 953.70 and 453.10 is: 681.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.45 : 953.70 = 453.10 : x
  2. Step 2: Convert to fraction form
    634.45/953.70 = 453.10/x
  3. Step 3: Cross multiply
    634.45x = 953.70 × 453.10
  4. Step 4: Simplify right side
    634.45x = 432,121.47
  5. Step 5: Solve for x
    x = 432,121.47/634.45
  6. Step 6: Final answer
    x = 681.10

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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.