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Finding the Fourth Proportional to 383.05, 573.89 and 260.88

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Solution

The fourth proportional to 383.05, 573.89 and 260.88 is: 390.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.05 : 573.89 = 260.88 : x
  2. Step 2: Convert to fraction form
    383.05/573.89 = 260.88/x
  3. Step 3: Cross multiply
    383.05x = 573.89 × 260.88
  4. Step 4: Simplify right side
    383.05x = 149,712.25
  5. Step 5: Solve for x
    x = 149,712.25/383.05
  6. Step 6: Final answer
    x = 390.84

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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.