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Finding the Fourth Proportional to 635.18, 953.31 and 453.02

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Solution

The fourth proportional to 635.18, 953.31 and 453.02 is: 679.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.18 : 953.31 = 453.02 : x
  2. Step 2: Convert to fraction form
    635.18/953.31 = 453.02/x
  3. Step 3: Cross multiply
    635.18x = 953.31 × 453.02
  4. Step 4: Simplify right side
    635.18x = 431,868.50
  5. Step 5: Solve for x
    x = 431,868.50/635.18
  6. Step 6: Final answer
    x = 679.92

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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.