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Finding the Fourth Proportional to 482.19, 665.37 and 283.02

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Solution

The fourth proportional to 482.19, 665.37 and 283.02 is: 390.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.19 : 665.37 = 283.02 : x
  2. Step 2: Convert to fraction form
    482.19/665.37 = 283.02/x
  3. Step 3: Cross multiply
    482.19x = 665.37 × 283.02
  4. Step 4: Simplify right side
    482.19x = 188,313.02
  5. Step 5: Solve for x
    x = 188,313.02/482.19
  6. Step 6: Final answer
    x = 390.54

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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.