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Finding the Fourth Proportional to 483.31, 668.20 and 365.90

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Solution

The fourth proportional to 483.31, 668.20 and 365.90 is: 505.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.31 : 668.20 = 365.90 : x
  2. Step 2: Convert to fraction form
    483.31/668.20 = 365.90/x
  3. Step 3: Cross multiply
    483.31x = 668.20 × 365.90
  4. Step 4: Simplify right side
    483.31x = 244,492.71
  5. Step 5: Solve for x
    x = 244,492.71/483.31
  6. Step 6: Final answer
    x = 505.87

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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.