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Finding the Fourth Proportional to 608.10, 839.05 and 346.11

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Solution

The fourth proportional to 608.10, 839.05 and 346.11 is: 477.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.10 : 839.05 = 346.11 : x
  2. Step 2: Convert to fraction form
    608.10/839.05 = 346.11/x
  3. Step 3: Cross multiply
    608.10x = 839.05 × 346.11
  4. Step 4: Simplify right side
    608.10x = 290,403.60
  5. Step 5: Solve for x
    x = 290,403.60/608.10
  6. Step 6: Final answer
    x = 477.56

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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.