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Finding the Fourth Proportional to 803.50, 1,204.34 and 369.76

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Solution

The fourth proportional to 803.50, 1,204.34 and 369.76 is: 554.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    803.50 : 1,204.34 = 369.76 : x
  2. Step 2: Convert to fraction form
    803.50/1,204.34 = 369.76/x
  3. Step 3: Cross multiply
    803.50x = 1,204.34 × 369.76
  4. Step 4: Simplify right side
    803.50x = 445,316.76
  5. Step 5: Solve for x
    x = 445,316.76/803.50
  6. Step 6: Final answer
    x = 554.22

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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.