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Finding the Fourth Proportional to 453.72, 625.95 and 257.22

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Solution

The fourth proportional to 453.72, 625.95 and 257.22 is: 354.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.72 : 625.95 = 257.22 : x
  2. Step 2: Convert to fraction form
    453.72/625.95 = 257.22/x
  3. Step 3: Cross multiply
    453.72x = 625.95 × 257.22
  4. Step 4: Simplify right side
    453.72x = 161,006.86
  5. Step 5: Solve for x
    x = 161,006.86/453.72
  6. Step 6: Final answer
    x = 354.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.