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Finding the Fourth Proportional to 623.97, 859.82 and 514.22

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Solution

The fourth proportional to 623.97, 859.82 and 514.22 is: 708.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.97 : 859.82 = 514.22 : x
  2. Step 2: Convert to fraction form
    623.97/859.82 = 514.22/x
  3. Step 3: Cross multiply
    623.97x = 859.82 × 514.22
  4. Step 4: Simplify right side
    623.97x = 442,129.77
  5. Step 5: Solve for x
    x = 442,129.77/623.97
  6. Step 6: Final answer
    x = 708.58

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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.