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Finding the Fourth Proportional to 634.91, 876.29 and 414.18

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Solution

The fourth proportional to 634.91, 876.29 and 414.18 is: 571.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.91 : 876.29 = 414.18 : x
  2. Step 2: Convert to fraction form
    634.91/876.29 = 414.18/x
  3. Step 3: Cross multiply
    634.91x = 876.29 × 414.18
  4. Step 4: Simplify right side
    634.91x = 362,939.72
  5. Step 5: Solve for x
    x = 362,939.72/634.91
  6. Step 6: Final answer
    x = 571.64

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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.