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Finding the Fourth Proportional to 622.22, 859.02 and 507.20

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Solution

The fourth proportional to 622.22, 859.02 and 507.20 is: 700.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.22 : 859.02 = 507.20 : x
  2. Step 2: Convert to fraction form
    622.22/859.02 = 507.20/x
  3. Step 3: Cross multiply
    622.22x = 859.02 × 507.20
  4. Step 4: Simplify right side
    622.22x = 435,694.94
  5. Step 5: Solve for x
    x = 435,694.94/622.22
  6. Step 6: Final answer
    x = 700.23

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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.