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Finding the Fourth Proportional to 580.18, 800.73 and 383.75

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Solution

The fourth proportional to 580.18, 800.73 and 383.75 is: 529.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.18 : 800.73 = 383.75 : x
  2. Step 2: Convert to fraction form
    580.18/800.73 = 383.75/x
  3. Step 3: Cross multiply
    580.18x = 800.73 × 383.75
  4. Step 4: Simplify right side
    580.18x = 307,282.14
  5. Step 5: Solve for x
    x = 307,282.14/580.18
  6. Step 6: Final answer
    x = 529.63

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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.