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Finding the Fourth Proportional to 608.25, 840.99 and 581.05

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Solution

The fourth proportional to 608.25, 840.99 and 581.05 is: 803.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.25 : 840.99 = 581.05 : x
  2. Step 2: Convert to fraction form
    608.25/840.99 = 581.05/x
  3. Step 3: Cross multiply
    608.25x = 840.99 × 581.05
  4. Step 4: Simplify right side
    608.25x = 488,654.33
  5. Step 5: Solve for x
    x = 488,654.33/608.25
  6. Step 6: Final answer
    x = 803.38

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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.