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Finding the Fourth Proportional to 1,327.83, 1,990.67 and 461.67

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Solution

The fourth proportional to 1,327.83, 1,990.67 and 461.67 is: 692.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.83 : 1,990.67 = 461.67 : x
  2. Step 2: Convert to fraction form
    1,327.83/1,990.67 = 461.67/x
  3. Step 3: Cross multiply
    1,327.83x = 1,990.67 × 461.67
  4. Step 4: Simplify right side
    1,327.83x = 919,030.31
  5. Step 5: Solve for x
    x = 919,030.31/1,327.83
  6. Step 6: Final answer
    x = 692.13

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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.