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Finding the Fourth Proportional to 497.45, 685.14 and 404.03

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Solution

The fourth proportional to 497.45, 685.14 and 404.03 is: 556.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.45 : 685.14 = 404.03 : x
  2. Step 2: Convert to fraction form
    497.45/685.14 = 404.03/x
  3. Step 3: Cross multiply
    497.45x = 685.14 × 404.03
  4. Step 4: Simplify right side
    497.45x = 276,817.11
  5. Step 5: Solve for x
    x = 276,817.11/497.45
  6. Step 6: Final answer
    x = 556.47

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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.