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Finding the Fourth Proportional to 423.47, 584.17 and 298.94

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Solution

The fourth proportional to 423.47, 584.17 and 298.94 is: 412.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.47 : 584.17 = 298.94 : x
  2. Step 2: Convert to fraction form
    423.47/584.17 = 298.94/x
  3. Step 3: Cross multiply
    423.47x = 584.17 × 298.94
  4. Step 4: Simplify right side
    423.47x = 174,630.80
  5. Step 5: Solve for x
    x = 174,630.80/423.47
  6. Step 6: Final answer
    x = 412.38

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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.