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Finding the Fourth Proportional to 622.33, 858.84 and 373.76

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Solution

The fourth proportional to 622.33, 858.84 and 373.76 is: 515.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.33 : 858.84 = 373.76 : x
  2. Step 2: Convert to fraction form
    622.33/858.84 = 373.76/x
  3. Step 3: Cross multiply
    622.33x = 858.84 × 373.76
  4. Step 4: Simplify right side
    622.33x = 320,997.56
  5. Step 5: Solve for x
    x = 320,997.56/622.33
  6. Step 6: Final answer
    x = 515.80

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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.