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Finding the Fourth Proportional to 403.40, 556.64 and 237.62

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Solution

The fourth proportional to 403.40, 556.64 and 237.62 is: 327.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.40 : 556.64 = 237.62 : x
  2. Step 2: Convert to fraction form
    403.40/556.64 = 237.62/x
  3. Step 3: Cross multiply
    403.40x = 556.64 × 237.62
  4. Step 4: Simplify right side
    403.40x = 132,268.80
  5. Step 5: Solve for x
    x = 132,268.80/403.40
  6. Step 6: Final answer
    x = 327.88

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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.