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Finding the Fourth Proportional to 622.05, 858.27 and 359.91

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Solution

The fourth proportional to 622.05, 858.27 and 359.91 is: 496.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.05 : 858.27 = 359.91 : x
  2. Step 2: Convert to fraction form
    622.05/858.27 = 359.91/x
  3. Step 3: Cross multiply
    622.05x = 858.27 × 359.91
  4. Step 4: Simplify right side
    622.05x = 308,899.96
  5. Step 5: Solve for x
    x = 308,899.96/622.05
  6. Step 6: Final answer
    x = 496.58

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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.