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Finding the Fourth Proportional to 412.34, 569.13 and 235.40

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Solution

The fourth proportional to 412.34, 569.13 and 235.40 is: 324.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.34 : 569.13 = 235.40 : x
  2. Step 2: Convert to fraction form
    412.34/569.13 = 235.40/x
  3. Step 3: Cross multiply
    412.34x = 569.13 × 235.40
  4. Step 4: Simplify right side
    412.34x = 133,973.20
  5. Step 5: Solve for x
    x = 133,973.20/412.34
  6. Step 6: Final answer
    x = 324.91

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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.