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Finding the Fourth Proportional to 453.76, 626.04 and 395.44

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Solution

The fourth proportional to 453.76, 626.04 and 395.44 is: 545.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.76 : 626.04 = 395.44 : x
  2. Step 2: Convert to fraction form
    453.76/626.04 = 395.44/x
  3. Step 3: Cross multiply
    453.76x = 626.04 × 395.44
  4. Step 4: Simplify right side
    453.76x = 247,561.26
  5. Step 5: Solve for x
    x = 247,561.26/453.76
  6. Step 6: Final answer
    x = 545.58

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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.