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Finding the Fourth Proportional to 608.52, 911.99 and 389.06

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Solution

The fourth proportional to 608.52, 911.99 and 389.06 is: 583.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.52 : 911.99 = 389.06 : x
  2. Step 2: Convert to fraction form
    608.52/911.99 = 389.06/x
  3. Step 3: Cross multiply
    608.52x = 911.99 × 389.06
  4. Step 4: Simplify right side
    608.52x = 354,815.24
  5. Step 5: Solve for x
    x = 354,815.24/608.52
  6. Step 6: Final answer
    x = 583.08

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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.