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Finding the Fourth Proportional to 386.19, 575.55 and 370.94

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Solution

The fourth proportional to 386.19, 575.55 and 370.94 is: 552.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.19 : 575.55 = 370.94 : x
  2. Step 2: Convert to fraction form
    386.19/575.55 = 370.94/x
  3. Step 3: Cross multiply
    386.19x = 575.55 × 370.94
  4. Step 4: Simplify right side
    386.19x = 213,491.64
  5. Step 5: Solve for x
    x = 213,491.64/386.19
  6. Step 6: Final answer
    x = 552.82

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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.