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Finding the Fourth Proportional to 383.07, 571.36 and 371.53

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Solution

The fourth proportional to 383.07, 571.36 and 371.53 is: 554.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.07 : 571.36 = 371.53 : x
  2. Step 2: Convert to fraction form
    383.07/571.36 = 371.53/x
  3. Step 3: Cross multiply
    383.07x = 571.36 × 371.53
  4. Step 4: Simplify right side
    383.07x = 212,277.38
  5. Step 5: Solve for x
    x = 212,277.38/383.07
  6. Step 6: Final answer
    x = 554.15

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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.