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Finding the Fourth Proportional to 482.06, 665.27 and 285.66

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Solution

The fourth proportional to 482.06, 665.27 and 285.66 is: 394.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.06 : 665.27 = 285.66 : x
  2. Step 2: Convert to fraction form
    482.06/665.27 = 285.66/x
  3. Step 3: Cross multiply
    482.06x = 665.27 × 285.66
  4. Step 4: Simplify right side
    482.06x = 190,041.03
  5. Step 5: Solve for x
    x = 190,041.03/482.06
  6. Step 6: Final answer
    x = 394.23

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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.