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Finding the Fourth Proportional to 608.78, 845.75 and 603.09

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Solution

The fourth proportional to 608.78, 845.75 and 603.09 is: 837.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.78 : 845.75 = 603.09 : x
  2. Step 2: Convert to fraction form
    608.78/845.75 = 603.09/x
  3. Step 3: Cross multiply
    608.78x = 845.75 × 603.09
  4. Step 4: Simplify right side
    608.78x = 510,064.88
  5. Step 5: Solve for x
    x = 510,064.88/608.78
  6. Step 6: Final answer
    x = 837.84

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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.