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Finding the Fourth Proportional to 1,202.39, 1,803.29 and 461.85

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Solution

The fourth proportional to 1,202.39, 1,803.29 and 461.85 is: 692.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,202.39 : 1,803.29 = 461.85 : x
  2. Step 2: Convert to fraction form
    1,202.39/1,803.29 = 461.85/x
  3. Step 3: Cross multiply
    1,202.39x = 1,803.29 × 461.85
  4. Step 4: Simplify right side
    1,202.39x = 832,849.49
  5. Step 5: Solve for x
    x = 832,849.49/1,202.39
  6. Step 6: Final answer
    x = 692.66

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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.