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Finding the Fourth Proportional to 856.73, 1,285.06 and 595.96

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Solution

The fourth proportional to 856.73, 1,285.06 and 595.96 is: 893.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    856.73 : 1,285.06 = 595.96 : x
  2. Step 2: Convert to fraction form
    856.73/1,285.06 = 595.96/x
  3. Step 3: Cross multiply
    856.73x = 1,285.06 × 595.96
  4. Step 4: Simplify right side
    856.73x = 765,841.38
  5. Step 5: Solve for x
    x = 765,841.38/856.73
  6. Step 6: Final answer
    x = 893.91

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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.