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Finding the Fourth Proportional to 453.66, 625.74 and 322.74

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Solution

The fourth proportional to 453.66, 625.74 and 322.74 is: 445.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.66 : 625.74 = 322.74 : x
  2. Step 2: Convert to fraction form
    453.66/625.74 = 322.74/x
  3. Step 3: Cross multiply
    453.66x = 625.74 × 322.74
  4. Step 4: Simplify right side
    453.66x = 201,951.33
  5. Step 5: Solve for x
    x = 201,951.33/453.66
  6. Step 6: Final answer
    x = 445.16

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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.