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Finding the Fourth Proportional to 622.24, 857.86 and 474.62

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Solution

The fourth proportional to 622.24, 857.86 and 474.62 is: 654.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.24 : 857.86 = 474.62 : x
  2. Step 2: Convert to fraction form
    622.24/857.86 = 474.62/x
  3. Step 3: Cross multiply
    622.24x = 857.86 × 474.62
  4. Step 4: Simplify right side
    622.24x = 407,152.04
  5. Step 5: Solve for x
    x = 407,152.04/622.24
  6. Step 6: Final answer
    x = 654.34

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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.