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Finding the Fourth Proportional to 386.08, 575.37 and 373.78

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Solution

The fourth proportional to 386.08, 575.37 and 373.78 is: 557.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.08 : 575.37 = 373.78 : x
  2. Step 2: Convert to fraction form
    386.08/575.37 = 373.78/x
  3. Step 3: Cross multiply
    386.08x = 575.37 × 373.78
  4. Step 4: Simplify right side
    386.08x = 215,062.73
  5. Step 5: Solve for x
    x = 215,062.73/386.08
  6. Step 6: Final answer
    x = 557.04

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