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Finding the Fourth Proportional to 623.35, 860.22 and 361.51

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Solution

The fourth proportional to 623.35, 860.22 and 361.51 is: 498.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.35 : 860.22 = 361.51 : x
  2. Step 2: Convert to fraction form
    623.35/860.22 = 361.51/x
  3. Step 3: Cross multiply
    623.35x = 860.22 × 361.51
  4. Step 4: Simplify right side
    623.35x = 310,976.32
  5. Step 5: Solve for x
    x = 310,976.32/623.35
  6. Step 6: Final answer
    x = 498.88

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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.