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Finding the Fourth Proportional to 497.27, 685.89 and 404.02

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Solution

The fourth proportional to 497.27, 685.89 and 404.02 is: 557.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.27 : 685.89 = 404.02 : x
  2. Step 2: Convert to fraction form
    497.27/685.89 = 404.02/x
  3. Step 3: Cross multiply
    497.27x = 685.89 × 404.02
  4. Step 4: Simplify right side
    497.27x = 277,111.56
  5. Step 5: Solve for x
    x = 277,111.56/497.27
  6. Step 6: Final answer
    x = 557.26

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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.