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Finding the Fourth Proportional to 622.44, 858.96 and 342.68

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Solution

The fourth proportional to 622.44, 858.96 and 342.68 is: 472.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.44 : 858.96 = 342.68 : x
  2. Step 2: Convert to fraction form
    622.44/858.96 = 342.68/x
  3. Step 3: Cross multiply
    622.44x = 858.96 × 342.68
  4. Step 4: Simplify right side
    622.44x = 294,347.34
  5. Step 5: Solve for x
    x = 294,347.34/622.44
  6. Step 6: Final answer
    x = 472.89

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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.