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Finding the Fourth Proportional to 808.98, 1,212.85 and 500.37

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Solution

The fourth proportional to 808.98, 1,212.85 and 500.37 is: 750.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    808.98 : 1,212.85 = 500.37 : x
  2. Step 2: Convert to fraction form
    808.98/1,212.85 = 500.37/x
  3. Step 3: Cross multiply
    808.98x = 1,212.85 × 500.37
  4. Step 4: Simplify right side
    808.98x = 606,873.75
  5. Step 5: Solve for x
    x = 606,873.75/808.98
  6. Step 6: Final answer
    x = 750.17

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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.