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Finding the Fourth Proportional to 383.09, 574.70 and 123.08

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Solution

The fourth proportional to 383.09, 574.70 and 123.08 is: 184.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.09 : 574.70 = 123.08 : x
  2. Step 2: Convert to fraction form
    383.09/574.70 = 123.08/x
  3. Step 3: Cross multiply
    383.09x = 574.70 × 123.08
  4. Step 4: Simplify right side
    383.09x = 70,730.59
  5. Step 5: Solve for x
    x = 70,730.59/383.09
  6. Step 6: Final answer
    x = 184.63

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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.