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Finding the Fourth Proportional to 500.83, 751.28 and 208.22

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Solution

The fourth proportional to 500.83, 751.28 and 208.22 is: 312.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.83 : 751.28 = 208.22 : x
  2. Step 2: Convert to fraction form
    500.83/751.28 = 208.22/x
  3. Step 3: Cross multiply
    500.83x = 751.28 × 208.22
  4. Step 4: Simplify right side
    500.83x = 156,426.72
  5. Step 5: Solve for x
    x = 156,426.72/500.83
  6. Step 6: Final answer
    x = 312.34

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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.