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Finding the Fourth Proportional to 453.27, 625.70 and 342.78

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Solution

The fourth proportional to 453.27, 625.70 and 342.78 is: 473.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.27 : 625.70 = 342.78 : x
  2. Step 2: Convert to fraction form
    453.27/625.70 = 342.78/x
  3. Step 3: Cross multiply
    453.27x = 625.70 × 342.78
  4. Step 4: Simplify right side
    453.27x = 214,477.45
  5. Step 5: Solve for x
    x = 214,477.45/453.27
  6. Step 6: Final answer
    x = 473.18

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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.