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Finding the Fourth Proportional to 456.54, 630.86 and 325.32

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Solution

The fourth proportional to 456.54, 630.86 and 325.32 is: 449.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.54 : 630.86 = 325.32 : x
  2. Step 2: Convert to fraction form
    456.54/630.86 = 325.32/x
  3. Step 3: Cross multiply
    456.54x = 630.86 × 325.32
  4. Step 4: Simplify right side
    456.54x = 205,231.38
  5. Step 5: Solve for x
    x = 205,231.38/456.54
  6. Step 6: Final answer
    x = 449.54

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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.