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Finding the Fourth Proportional to 649.97, 896.96 and 417.50

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Solution

The fourth proportional to 649.97, 896.96 and 417.50 is: 576.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.97 : 896.96 = 417.50 : x
  2. Step 2: Convert to fraction form
    649.97/896.96 = 417.50/x
  3. Step 3: Cross multiply
    649.97x = 896.96 × 417.50
  4. Step 4: Simplify right side
    649.97x = 374,480.72
  5. Step 5: Solve for x
    x = 374,480.72/649.97
  6. Step 6: Final answer
    x = 576.15

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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.