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Finding the Fourth Proportional to 463.05, 639.01 and 253.23

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Solution

The fourth proportional to 463.05, 639.01 and 253.23 is: 349.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.05 : 639.01 = 253.23 : x
  2. Step 2: Convert to fraction form
    463.05/639.01 = 253.23/x
  3. Step 3: Cross multiply
    463.05x = 639.01 × 253.23
  4. Step 4: Simplify right side
    463.05x = 161,816.50
  5. Step 5: Solve for x
    x = 161,816.50/463.05
  6. Step 6: Final answer
    x = 349.46

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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.