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Finding the Fourth Proportional to 885.85, 1,222.83 and 591.62

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Solution

The fourth proportional to 885.85, 1,222.83 and 591.62 is: 816.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.85 : 1,222.83 = 591.62 : x
  2. Step 2: Convert to fraction form
    885.85/1,222.83 = 591.62/x
  3. Step 3: Cross multiply
    885.85x = 1,222.83 × 591.62
  4. Step 4: Simplify right side
    885.85x = 723,444.57
  5. Step 5: Solve for x
    x = 723,444.57/885.85
  6. Step 6: Final answer
    x = 816.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.