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Finding the Fourth Proportional to 453.30, 626.31 and 425.90

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Solution

The fourth proportional to 453.30, 626.31 and 425.90 is: 588.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.30 : 626.31 = 425.90 : x
  2. Step 2: Convert to fraction form
    453.30/626.31 = 425.90/x
  3. Step 3: Cross multiply
    453.30x = 626.31 × 425.90
  4. Step 4: Simplify right side
    453.30x = 266,742.30
  5. Step 5: Solve for x
    x = 266,742.30/453.30
  6. Step 6: Final answer
    x = 588.45

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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.