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Finding the Fourth Proportional to 580.14, 870.30 and 169.22

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Solution

The fourth proportional to 580.14, 870.30 and 169.22 is: 253.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.14 : 870.30 = 169.22 : x
  2. Step 2: Convert to fraction form
    580.14/870.30 = 169.22/x
  3. Step 3: Cross multiply
    580.14x = 870.30 × 169.22
  4. Step 4: Simplify right side
    580.14x = 147,272.17
  5. Step 5: Solve for x
    x = 147,272.17/580.14
  6. Step 6: Final answer
    x = 253.86

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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.