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Finding the Fourth Proportional to 608.14, 911.70 and 283.72

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Solution

The fourth proportional to 608.14, 911.70 and 283.72 is: 425.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.14 : 911.70 = 283.72 : x
  2. Step 2: Convert to fraction form
    608.14/911.70 = 283.72/x
  3. Step 3: Cross multiply
    608.14x = 911.70 × 283.72
  4. Step 4: Simplify right side
    608.14x = 258,667.52
  5. Step 5: Solve for x
    x = 258,667.52/608.14
  6. Step 6: Final answer
    x = 425.34

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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.