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Finding the Fourth Proportional to 608.11, 912.39 and 347.95

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Solution

The fourth proportional to 608.11, 912.39 and 347.95 is: 522.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.11 : 912.39 = 347.95 : x
  2. Step 2: Convert to fraction form
    608.11/912.39 = 347.95/x
  3. Step 3: Cross multiply
    608.11x = 912.39 × 347.95
  4. Step 4: Simplify right side
    608.11x = 317,466.10
  5. Step 5: Solve for x
    x = 317,466.10/608.11
  6. Step 6: Final answer
    x = 522.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.