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Finding the Fourth Proportional to 622.08, 860.67 and 528.48

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Solution

The fourth proportional to 622.08, 860.67 and 528.48 is: 731.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.08 : 860.67 = 528.48 : x
  2. Step 2: Convert to fraction form
    622.08/860.67 = 528.48/x
  3. Step 3: Cross multiply
    622.08x = 860.67 × 528.48
  4. Step 4: Simplify right side
    622.08x = 454,846.88
  5. Step 5: Solve for x
    x = 454,846.88/622.08
  6. Step 6: Final answer
    x = 731.17

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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.