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Finding the Fourth Proportional to 734.87, 1,014.12 and 403.31

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Solution

The fourth proportional to 734.87, 1,014.12 and 403.31 is: 556.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.87 : 1,014.12 = 403.31 : x
  2. Step 2: Convert to fraction form
    734.87/1,014.12 = 403.31/x
  3. Step 3: Cross multiply
    734.87x = 1,014.12 × 403.31
  4. Step 4: Simplify right side
    734.87x = 408,999.67
  5. Step 5: Solve for x
    x = 408,999.67/734.87
  6. Step 6: Final answer
    x = 556.56

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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.