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Finding the Fourth Proportional to 607.35, 911.48 and 487.07

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Solution

The fourth proportional to 607.35, 911.48 and 487.07 is: 730.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.35 : 911.48 = 487.07 : x
  2. Step 2: Convert to fraction form
    607.35/911.48 = 487.07/x
  3. Step 3: Cross multiply
    607.35x = 911.48 × 487.07
  4. Step 4: Simplify right side
    607.35x = 443,947.57
  5. Step 5: Solve for x
    x = 443,947.57/607.35
  6. Step 6: Final answer
    x = 730.96

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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.