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Finding the Fourth Proportional to 620.48, 860.36 and 599.72

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Solution

The fourth proportional to 620.48, 860.36 and 599.72 is: 831.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.48 : 860.36 = 599.72 : x
  2. Step 2: Convert to fraction form
    620.48/860.36 = 599.72/x
  3. Step 3: Cross multiply
    620.48x = 860.36 × 599.72
  4. Step 4: Simplify right side
    620.48x = 515,973.44
  5. Step 5: Solve for x
    x = 515,973.44/620.48
  6. Step 6: Final answer
    x = 831.58

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.