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Finding the Fourth Proportional to 467.17, 703.28 and 424.78

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Solution

The fourth proportional to 467.17, 703.28 and 424.78 is: 639.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.17 : 703.28 = 424.78 : x
  2. Step 2: Convert to fraction form
    467.17/703.28 = 424.78/x
  3. Step 3: Cross multiply
    467.17x = 703.28 × 424.78
  4. Step 4: Simplify right side
    467.17x = 298,738.58
  5. Step 5: Solve for x
    x = 298,738.58/467.17
  6. Step 6: Final answer
    x = 639.47

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.