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Finding the Fourth Proportional to 580.93, 870.09 and 408.37

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Solution

The fourth proportional to 580.93, 870.09 and 408.37 is: 611.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.93 : 870.09 = 408.37 : x
  2. Step 2: Convert to fraction form
    580.93/870.09 = 408.37/x
  3. Step 3: Cross multiply
    580.93x = 870.09 × 408.37
  4. Step 4: Simplify right side
    580.93x = 355,318.65
  5. Step 5: Solve for x
    x = 355,318.65/580.93
  6. Step 6: Final answer
    x = 611.64

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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.