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Finding the Fourth Proportional to 447.84, 617.18 and 359.15

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Solution

The fourth proportional to 447.84, 617.18 and 359.15 is: 494.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.84 : 617.18 = 359.15 : x
  2. Step 2: Convert to fraction form
    447.84/617.18 = 359.15/x
  3. Step 3: Cross multiply
    447.84x = 617.18 × 359.15
  4. Step 4: Simplify right side
    447.84x = 221,655.32
  5. Step 5: Solve for x
    x = 221,655.32/447.84
  6. Step 6: Final answer
    x = 494.94

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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.