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Finding the Fourth Proportional to 482.72, 665.71 and 325.48

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Solution

The fourth proportional to 482.72, 665.71 and 325.48 is: 448.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.72 : 665.71 = 325.48 : x
  2. Step 2: Convert to fraction form
    482.72/665.71 = 325.48/x
  3. Step 3: Cross multiply
    482.72x = 665.71 × 325.48
  4. Step 4: Simplify right side
    482.72x = 216,675.29
  5. Step 5: Solve for x
    x = 216,675.29/482.72
  6. Step 6: Final answer
    x = 448.86

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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.