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Finding the Fourth Proportional to 483.28, 666.89 and 315.27

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Solution

The fourth proportional to 483.28, 666.89 and 315.27 is: 435.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.28 : 666.89 = 315.27 : x
  2. Step 2: Convert to fraction form
    483.28/666.89 = 315.27/x
  3. Step 3: Cross multiply
    483.28x = 666.89 × 315.27
  4. Step 4: Simplify right side
    483.28x = 210,250.41
  5. Step 5: Solve for x
    x = 210,250.41/483.28
  6. Step 6: Final answer
    x = 435.05

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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.