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Finding the Fourth Proportional to 412.44, 569.72 and 330.13

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Solution

The fourth proportional to 412.44, 569.72 and 330.13 is: 456.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.44 : 569.72 = 330.13 : x
  2. Step 2: Convert to fraction form
    412.44/569.72 = 330.13/x
  3. Step 3: Cross multiply
    412.44x = 569.72 × 330.13
  4. Step 4: Simplify right side
    412.44x = 188,081.66
  5. Step 5: Solve for x
    x = 188,081.66/412.44
  6. Step 6: Final answer
    x = 456.02

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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.