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Finding the Fourth Proportional to 606.57, 908.64 and 553.11

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Solution

The fourth proportional to 606.57, 908.64 and 553.11 is: 828.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.57 : 908.64 = 553.11 : x
  2. Step 2: Convert to fraction form
    606.57/908.64 = 553.11/x
  3. Step 3: Cross multiply
    606.57x = 908.64 × 553.11
  4. Step 4: Simplify right side
    606.57x = 502,577.87
  5. Step 5: Solve for x
    x = 502,577.87/606.57
  6. Step 6: Final answer
    x = 828.56

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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.