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Finding the Fourth Proportional to 622.31, 859.01 and 436.82

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Solution

The fourth proportional to 622.31, 859.01 and 436.82 is: 602.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.31 : 859.01 = 436.82 : x
  2. Step 2: Convert to fraction form
    622.31/859.01 = 436.82/x
  3. Step 3: Cross multiply
    622.31x = 859.01 × 436.82
  4. Step 4: Simplify right side
    622.31x = 375,226.27
  5. Step 5: Solve for x
    x = 375,226.27/622.31
  6. Step 6: Final answer
    x = 602.96

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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.