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Finding the Fourth Proportional to 655.04, 905.22 and 497.56

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Solution

The fourth proportional to 655.04, 905.22 and 497.56 is: 687.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.04 : 905.22 = 497.56 : x
  2. Step 2: Convert to fraction form
    655.04/905.22 = 497.56/x
  3. Step 3: Cross multiply
    655.04x = 905.22 × 497.56
  4. Step 4: Simplify right side
    655.04x = 450,401.26
  5. Step 5: Solve for x
    x = 450,401.26/655.04
  6. Step 6: Final answer
    x = 687.59

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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.