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Finding the Fourth Proportional to 412.96, 569.28 and 302.56

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Solution

The fourth proportional to 412.96, 569.28 and 302.56 is: 417.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.96 : 569.28 = 302.56 : x
  2. Step 2: Convert to fraction form
    412.96/569.28 = 302.56/x
  3. Step 3: Cross multiply
    412.96x = 569.28 × 302.56
  4. Step 4: Simplify right side
    412.96x = 172,241.36
  5. Step 5: Solve for x
    x = 172,241.36/412.96
  6. Step 6: Final answer
    x = 417.09

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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.