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Finding the Fourth Proportional to 606.72, 908.54 and 400.98

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Solution

The fourth proportional to 606.72, 908.54 and 400.98 is: 600.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.72 : 908.54 = 400.98 : x
  2. Step 2: Convert to fraction form
    606.72/908.54 = 400.98/x
  3. Step 3: Cross multiply
    606.72x = 908.54 × 400.98
  4. Step 4: Simplify right side
    606.72x = 364,306.63
  5. Step 5: Solve for x
    x = 364,306.63/606.72
  6. Step 6: Final answer
    x = 600.45

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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.