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Finding the Fourth Proportional to 720.06, 1,078.22 and 500.38

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Solution

The fourth proportional to 720.06, 1,078.22 and 500.38 is: 749.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.06 : 1,078.22 = 500.38 : x
  2. Step 2: Convert to fraction form
    720.06/1,078.22 = 500.38/x
  3. Step 3: Cross multiply
    720.06x = 1,078.22 × 500.38
  4. Step 4: Simplify right side
    720.06x = 539,519.72
  5. Step 5: Solve for x
    x = 539,519.72/720.06
  6. Step 6: Final answer
    x = 749.27

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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.