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Finding the Fourth Proportional to 386.68, 577.19 and 335.68

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Solution

The fourth proportional to 386.68, 577.19 and 335.68 is: 501.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.68 : 577.19 = 335.68 : x
  2. Step 2: Convert to fraction form
    386.68/577.19 = 335.68/x
  3. Step 3: Cross multiply
    386.68x = 577.19 × 335.68
  4. Step 4: Simplify right side
    386.68x = 193,751.14
  5. Step 5: Solve for x
    x = 193,751.14/386.68
  6. Step 6: Final answer
    x = 501.06

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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.