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Finding the Fourth Proportional to 846.87, 1,269.44 and 572.99

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Solution

The fourth proportional to 846.87, 1,269.44 and 572.99 is: 858.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.87 : 1,269.44 = 572.99 : x
  2. Step 2: Convert to fraction form
    846.87/1,269.44 = 572.99/x
  3. Step 3: Cross multiply
    846.87x = 1,269.44 × 572.99
  4. Step 4: Simplify right side
    846.87x = 727,367.21
  5. Step 5: Solve for x
    x = 727,367.21/846.87
  6. Step 6: Final answer
    x = 858.89

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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.