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Finding the Fourth Proportional to 478.56, 718.88 and 351.04

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Solution

The fourth proportional to 478.56, 718.88 and 351.04 is: 527.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.56 : 718.88 = 351.04 : x
  2. Step 2: Convert to fraction form
    478.56/718.88 = 351.04/x
  3. Step 3: Cross multiply
    478.56x = 718.88 × 351.04
  4. Step 4: Simplify right side
    478.56x = 252,355.64
  5. Step 5: Solve for x
    x = 252,355.64/478.56
  6. Step 6: Final answer
    x = 527.32

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Why These Related Problems?

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