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Finding the Fourth Proportional to 453.33, 625.25 and 305.91

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Solution

The fourth proportional to 453.33, 625.25 and 305.91 is: 421.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.33 : 625.25 = 305.91 : x
  2. Step 2: Convert to fraction form
    453.33/625.25 = 305.91/x
  3. Step 3: Cross multiply
    453.33x = 625.25 × 305.91
  4. Step 4: Simplify right side
    453.33x = 191,270.99
  5. Step 5: Solve for x
    x = 191,270.99/453.33
  6. Step 6: Final answer
    x = 421.92

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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.