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Finding the Fourth Proportional to 580.36, 869.93 and 271.96

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Solution

The fourth proportional to 580.36, 869.93 and 271.96 is: 407.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.36 : 869.93 = 271.96 : x
  2. Step 2: Convert to fraction form
    580.36/869.93 = 271.96/x
  3. Step 3: Cross multiply
    580.36x = 869.93 × 271.96
  4. Step 4: Simplify right side
    580.36x = 236,580.45
  5. Step 5: Solve for x
    x = 236,580.45/580.36
  6. Step 6: Final answer
    x = 407.64

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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.