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Finding the Fourth Proportional to 608.92, 840.36 and 346.96

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Solution

The fourth proportional to 608.92, 840.36 and 346.96 is: 478.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.92 : 840.36 = 346.96 : x
  2. Step 2: Convert to fraction form
    608.92/840.36 = 346.96/x
  3. Step 3: Cross multiply
    608.92x = 840.36 × 346.96
  4. Step 4: Simplify right side
    608.92x = 291,571.31
  5. Step 5: Solve for x
    x = 291,571.31/608.92
  6. Step 6: Final answer
    x = 478.83

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Double scale
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Similar ratio
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1.5x scale

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.