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Finding the Fourth Proportional to 456.65, 629.95 and 325.73

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Solution

The fourth proportional to 456.65, 629.95 and 325.73 is: 449.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.65 : 629.95 = 325.73 : x
  2. Step 2: Convert to fraction form
    456.65/629.95 = 325.73/x
  3. Step 3: Cross multiply
    456.65x = 629.95 × 325.73
  4. Step 4: Simplify right side
    456.65x = 205,196.79
  5. Step 5: Solve for x
    x = 205,196.79/456.65
  6. Step 6: Final answer
    x = 449.35

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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.