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Finding the Fourth Proportional to 463.07, 639.03 and 256.07

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Solution

The fourth proportional to 463.07, 639.03 and 256.07 is: 353.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.07 : 639.03 = 256.07 : x
  2. Step 2: Convert to fraction form
    463.07/639.03 = 256.07/x
  3. Step 3: Cross multiply
    463.07x = 639.03 × 256.07
  4. Step 4: Simplify right side
    463.07x = 163,631.94
  5. Step 5: Solve for x
    x = 163,631.94/463.07
  6. Step 6: Final answer
    x = 353.37

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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.