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Finding the Fourth Proportional to 478.56, 718.02 and 222

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Solution

The fourth proportional to 478.56, 718.02 and 222 is: 333.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.56 : 718.02 = 222 : x
  2. Step 2: Convert to fraction form
    478.56/718.02 = 222/x
  3. Step 3: Cross multiply
    478.56x = 718.02 × 222
  4. Step 4: Simplify right side
    478.56x = 159,400.44
  5. Step 5: Solve for x
    x = 159,400.44/478.56
  6. Step 6: Final answer
    x = 333.08

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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.