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Finding the Fourth Proportional to 475.33, 712 and 279.74

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Solution

The fourth proportional to 475.33, 712 and 279.74 is: 419.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.33 : 712 = 279.74 : x
  2. Step 2: Convert to fraction form
    475.33/712 = 279.74/x
  3. Step 3: Cross multiply
    475.33x = 712 × 279.74
  4. Step 4: Simplify right side
    475.33x = 199,171.32
  5. Step 5: Solve for x
    x = 199,171.32/475.33
  6. Step 6: Final answer
    x = 419.02

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.