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Finding the Fourth Proportional to 622.31, 858.80 and 360.41

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Solution

The fourth proportional to 622.31, 858.80 and 360.41 is: 497.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.31 : 858.80 = 360.41 : x
  2. Step 2: Convert to fraction form
    622.31/858.80 = 360.41/x
  3. Step 3: Cross multiply
    622.31x = 858.80 × 360.41
  4. Step 4: Simplify right side
    622.31x = 309,520.11
  5. Step 5: Solve for x
    x = 309,520.11/622.31
  6. Step 6: Final answer
    x = 497.37

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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.