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Finding the Fourth Proportional to 453.86, 625.90 and 304.82

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Solution

The fourth proportional to 453.86, 625.90 and 304.82 is: 420.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.86 : 625.90 = 304.82 : x
  2. Step 2: Convert to fraction form
    453.86/625.90 = 304.82/x
  3. Step 3: Cross multiply
    453.86x = 625.90 × 304.82
  4. Step 4: Simplify right side
    453.86x = 190,785.31
  5. Step 5: Solve for x
    x = 190,785.31/453.86
  6. Step 6: Final answer
    x = 420.36

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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.