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Finding the Fourth Proportional to 608.91, 840.70 and 376.44

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Solution

The fourth proportional to 608.91, 840.70 and 376.44 is: 519.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.91 : 840.70 = 376.44 : x
  2. Step 2: Convert to fraction form
    608.91/840.70 = 376.44/x
  3. Step 3: Cross multiply
    608.91x = 840.70 × 376.44
  4. Step 4: Simplify right side
    608.91x = 316,468.31
  5. Step 5: Solve for x
    x = 316,468.31/608.91
  6. Step 6: Final answer
    x = 519.73

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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.