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Finding the Fourth Proportional to 483.02, 665.94 and 308.30

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Solution

The fourth proportional to 483.02, 665.94 and 308.30 is: 425.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.02 : 665.94 = 308.30 : x
  2. Step 2: Convert to fraction form
    483.02/665.94 = 308.30/x
  3. Step 3: Cross multiply
    483.02x = 665.94 × 308.30
  4. Step 4: Simplify right side
    483.02x = 205,309.30
  5. Step 5: Solve for x
    x = 205,309.30/483.02
  6. Step 6: Final answer
    x = 425.05

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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.