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Finding the Fourth Proportional to 608.58, 838.89 and 477.36

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Solution

The fourth proportional to 608.58, 838.89 and 477.36 is: 658.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.58 : 838.89 = 477.36 : x
  2. Step 2: Convert to fraction form
    608.58/838.89 = 477.36/x
  3. Step 3: Cross multiply
    608.58x = 838.89 × 477.36
  4. Step 4: Simplify right side
    608.58x = 400,452.53
  5. Step 5: Solve for x
    x = 400,452.53/608.58
  6. Step 6: Final answer
    x = 658.01

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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.