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Finding the Fourth Proportional to 608.39, 839.52 and 346.35

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Solution

The fourth proportional to 608.39, 839.52 and 346.35 is: 477.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.39 : 839.52 = 346.35 : x
  2. Step 2: Convert to fraction form
    608.39/839.52 = 346.35/x
  3. Step 3: Cross multiply
    608.39x = 839.52 × 346.35
  4. Step 4: Simplify right side
    608.39x = 290,767.75
  5. Step 5: Solve for x
    x = 290,767.75/608.39
  6. Step 6: Final answer
    x = 477.93

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Double scale
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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.