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Finding the Fourth Proportional to 580.01, 869.99 and 214.65

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Solution

The fourth proportional to 580.01, 869.99 and 214.65 is: 321.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.01 : 869.99 = 214.65 : x
  2. Step 2: Convert to fraction form
    580.01/869.99 = 214.65/x
  3. Step 3: Cross multiply
    580.01x = 869.99 × 214.65
  4. Step 4: Simplify right side
    580.01x = 186,742.28
  5. Step 5: Solve for x
    x = 186,742.28/580.01
  6. Step 6: Final answer
    x = 321.97

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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.