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Finding the Fourth Proportional to 377.77, 521.18 and 230.42

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Solution

The fourth proportional to 377.77, 521.18 and 230.42 is: 317.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.77 : 521.18 = 230.42 : x
  2. Step 2: Convert to fraction form
    377.77/521.18 = 230.42/x
  3. Step 3: Cross multiply
    377.77x = 521.18 × 230.42
  4. Step 4: Simplify right side
    377.77x = 120,090.30
  5. Step 5: Solve for x
    x = 120,090.30/377.77
  6. Step 6: Final answer
    x = 317.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.