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Finding the Fourth Proportional to 622.51, 859.07 and 373.64

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Solution

The fourth proportional to 622.51, 859.07 and 373.64 is: 515.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.51 : 859.07 = 373.64 : x
  2. Step 2: Convert to fraction form
    622.51/859.07 = 373.64/x
  3. Step 3: Cross multiply
    622.51x = 859.07 × 373.64
  4. Step 4: Simplify right side
    622.51x = 320,979.55
  5. Step 5: Solve for x
    x = 320,979.55/622.51
  6. Step 6: Final answer
    x = 515.62

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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.