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Finding the Fourth Proportional to 580.32, 799.65 and 383.49

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Solution

The fourth proportional to 580.32, 799.65 and 383.49 is: 528.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.32 : 799.65 = 383.49 : x
  2. Step 2: Convert to fraction form
    580.32/799.65 = 383.49/x
  3. Step 3: Cross multiply
    580.32x = 799.65 × 383.49
  4. Step 4: Simplify right side
    580.32x = 306,657.78
  5. Step 5: Solve for x
    x = 306,657.78/580.32
  6. Step 6: Final answer
    x = 528.43

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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.