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Finding the Fourth Proportional to 734.79, 1,101.50 and 369.15

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Solution

The fourth proportional to 734.79, 1,101.50 and 369.15 is: 553.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.79 : 1,101.50 = 369.15 : x
  2. Step 2: Convert to fraction form
    734.79/1,101.50 = 369.15/x
  3. Step 3: Cross multiply
    734.79x = 1,101.50 × 369.15
  4. Step 4: Simplify right side
    734.79x = 406,614.13
  5. Step 5: Solve for x
    x = 406,614.13/734.79
  6. Step 6: Final answer
    x = 553.37

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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.