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Finding the Fourth Proportional to 609.99, 841.74 and 361.32

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Solution

The fourth proportional to 609.99, 841.74 and 361.32 is: 498.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.99 : 841.74 = 361.32 : x
  2. Step 2: Convert to fraction form
    609.99/841.74 = 361.32/x
  3. Step 3: Cross multiply
    609.99x = 841.74 × 361.32
  4. Step 4: Simplify right side
    609.99x = 304,137.50
  5. Step 5: Solve for x
    x = 304,137.50/609.99
  6. Step 6: Final answer
    x = 498.59

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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.