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Finding the Fourth Proportional to 622.60, 859.20 and 360.62

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Solution

The fourth proportional to 622.60, 859.20 and 360.62 is: 497.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.60 : 859.20 = 360.62 : x
  2. Step 2: Convert to fraction form
    622.60/859.20 = 360.62/x
  3. Step 3: Cross multiply
    622.60x = 859.20 × 360.62
  4. Step 4: Simplify right side
    622.60x = 309,844.70
  5. Step 5: Solve for x
    x = 309,844.70/622.60
  6. Step 6: Final answer
    x = 497.66

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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.