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Finding the Fourth Proportional to 629.16, 867.72 and 482.12

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Solution

The fourth proportional to 629.16, 867.72 and 482.12 is: 664.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.16 : 867.72 = 482.12 : x
  2. Step 2: Convert to fraction form
    629.16/867.72 = 482.12/x
  3. Step 3: Cross multiply
    629.16x = 867.72 × 482.12
  4. Step 4: Simplify right side
    629.16x = 418,345.17
  5. Step 5: Solve for x
    x = 418,345.17/629.16
  6. Step 6: Final answer
    x = 664.93

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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.