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Finding the Fourth Proportional to 813.73, 1,219.55 and 594.34

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Solution

The fourth proportional to 813.73, 1,219.55 and 594.34 is: 890.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    813.73 : 1,219.55 = 594.34 : x
  2. Step 2: Convert to fraction form
    813.73/1,219.55 = 594.34/x
  3. Step 3: Cross multiply
    813.73x = 1,219.55 × 594.34
  4. Step 4: Simplify right side
    813.73x = 724,827.35
  5. Step 5: Solve for x
    x = 724,827.35/813.73
  6. Step 6: Final answer
    x = 890.75

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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.