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Finding the Fourth Proportional to 412.37, 569.81 and 313.96

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Solution

The fourth proportional to 412.37, 569.81 and 313.96 is: 433.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.37 : 569.81 = 313.96 : x
  2. Step 2: Convert to fraction form
    412.37/569.81 = 313.96/x
  3. Step 3: Cross multiply
    412.37x = 569.81 × 313.96
  4. Step 4: Simplify right side
    412.37x = 178,897.55
  5. Step 5: Solve for x
    x = 178,897.55/412.37
  6. Step 6: Final answer
    x = 433.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.