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Finding the Fourth Proportional to 608.06, 838.76 and 383.60

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Solution

The fourth proportional to 608.06, 838.76 and 383.60 is: 529.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.06 : 838.76 = 383.60 : x
  2. Step 2: Convert to fraction form
    608.06/838.76 = 383.60/x
  3. Step 3: Cross multiply
    608.06x = 838.76 × 383.60
  4. Step 4: Simplify right side
    608.06x = 321,744.88
  5. Step 5: Solve for x
    x = 321,744.88/608.06
  6. Step 6: Final answer
    x = 529.13

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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.