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Finding the Fourth Proportional to 734.80, 1,014.08 and 403.23

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Solution

The fourth proportional to 734.80, 1,014.08 and 403.23 is: 556.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.80 : 1,014.08 = 403.23 : x
  2. Step 2: Convert to fraction form
    734.80/1,014.08 = 403.23/x
  3. Step 3: Cross multiply
    734.80x = 1,014.08 × 403.23
  4. Step 4: Simplify right side
    734.80x = 408,907.48
  5. Step 5: Solve for x
    x = 408,907.48/734.80
  6. Step 6: Final answer
    x = 556.49

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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.