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Finding the Fourth Proportional to 417.71, 625.74 and 344.69

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Solution

The fourth proportional to 417.71, 625.74 and 344.69 is: 516.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.71 : 625.74 = 344.69 : x
  2. Step 2: Convert to fraction form
    417.71/625.74 = 344.69/x
  3. Step 3: Cross multiply
    417.71x = 625.74 × 344.69
  4. Step 4: Simplify right side
    417.71x = 215,683.19
  5. Step 5: Solve for x
    x = 215,683.19/417.71
  6. Step 6: Final answer
    x = 516.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.