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Finding the Fourth Proportional to 608.41, 839.01 and 557.83

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Solution

The fourth proportional to 608.41, 839.01 and 557.83 is: 769.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.41 : 839.01 = 557.83 : x
  2. Step 2: Convert to fraction form
    608.41/839.01 = 557.83/x
  3. Step 3: Cross multiply
    608.41x = 839.01 × 557.83
  4. Step 4: Simplify right side
    608.41x = 468,024.95
  5. Step 5: Solve for x
    x = 468,024.95/608.41
  6. Step 6: Final answer
    x = 769.26

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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.