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Finding the Fourth Proportional to 580.89, 870.62 and 306.80

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Solution

The fourth proportional to 580.89, 870.62 and 306.80 is: 459.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.89 : 870.62 = 306.80 : x
  2. Step 2: Convert to fraction form
    580.89/870.62 = 306.80/x
  3. Step 3: Cross multiply
    580.89x = 870.62 × 306.80
  4. Step 4: Simplify right side
    580.89x = 267,111.08
  5. Step 5: Solve for x
    x = 267,111.08/580.89
  6. Step 6: Final answer
    x = 459.83

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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.