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Finding the Fourth Proportional to 453.84, 624.72 and 343.12

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Solution

The fourth proportional to 453.84, 624.72 and 343.12 is: 472.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.84 : 624.72 = 343.12 : x
  2. Step 2: Convert to fraction form
    453.84/624.72 = 343.12/x
  3. Step 3: Cross multiply
    453.84x = 624.72 × 343.12
  4. Step 4: Simplify right side
    453.84x = 214,353.93
  5. Step 5: Solve for x
    x = 214,353.93/453.84
  6. Step 6: Final answer
    x = 472.31

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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.