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Finding the Fourth Proportional to 483.03, 666.36 and 286.47

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Solution

The fourth proportional to 483.03, 666.36 and 286.47 is: 395.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.03 : 666.36 = 286.47 : x
  2. Step 2: Convert to fraction form
    483.03/666.36 = 286.47/x
  3. Step 3: Cross multiply
    483.03x = 666.36 × 286.47
  4. Step 4: Simplify right side
    483.03x = 190,892.15
  5. Step 5: Solve for x
    x = 190,892.15/483.03
  6. Step 6: Final answer
    x = 395.20

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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.