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Finding the Fourth Proportional to 383.45, 571.26 and 370.40

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Solution

The fourth proportional to 383.45, 571.26 and 370.40 is: 551.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.45 : 571.26 = 370.40 : x
  2. Step 2: Convert to fraction form
    383.45/571.26 = 370.40/x
  3. Step 3: Cross multiply
    383.45x = 571.26 × 370.40
  4. Step 4: Simplify right side
    383.45x = 211,593.24
  5. Step 5: Solve for x
    x = 211,593.24/383.45
  6. Step 6: Final answer
    x = 551.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.