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Finding the Fourth Proportional to 609.88, 841.59 and 361.13

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Solution

The fourth proportional to 609.88, 841.59 and 361.13 is: 498.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.88 : 841.59 = 361.13 : x
  2. Step 2: Convert to fraction form
    609.88/841.59 = 361.13/x
  3. Step 3: Cross multiply
    609.88x = 841.59 × 361.13
  4. Step 4: Simplify right side
    609.88x = 303,926.29
  5. Step 5: Solve for x
    x = 303,926.29/609.88
  6. Step 6: Final answer
    x = 498.34

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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.