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Finding the Fourth Proportional to 655.07, 902.94 and 497.19

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Solution

The fourth proportional to 655.07, 902.94 and 497.19 is: 685.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.07 : 902.94 = 497.19 : x
  2. Step 2: Convert to fraction form
    655.07/902.94 = 497.19/x
  3. Step 3: Cross multiply
    655.07x = 902.94 × 497.19
  4. Step 4: Simplify right side
    655.07x = 448,930.09
  5. Step 5: Solve for x
    x = 448,930.09/655.07
  6. Step 6: Final answer
    x = 685.32

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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.