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Finding the Fourth Proportional to 622.55, 859.23 and 360.56

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Solution

The fourth proportional to 622.55, 859.23 and 360.56 is: 497.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.55 : 859.23 = 360.56 : x
  2. Step 2: Convert to fraction form
    622.55/859.23 = 360.56/x
  3. Step 3: Cross multiply
    622.55x = 859.23 × 360.56
  4. Step 4: Simplify right side
    622.55x = 309,806.12
  5. Step 5: Solve for x
    x = 309,806.12/622.55
  6. Step 6: Final answer
    x = 497.64

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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.