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Finding the Fourth Proportional to 914.92, 1,372.05 and 567.73

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Solution

The fourth proportional to 914.92, 1,372.05 and 567.73 is: 851.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.92 : 1,372.05 = 567.73 : x
  2. Step 2: Convert to fraction form
    914.92/1,372.05 = 567.73/x
  3. Step 3: Cross multiply
    914.92x = 1,372.05 × 567.73
  4. Step 4: Simplify right side
    914.92x = 778,953.95
  5. Step 5: Solve for x
    x = 778,953.95/914.92
  6. Step 6: Final answer
    x = 851.39

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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.