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Finding the Fourth Proportional to 1,607.38, 2,411.67 and 729.85

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Solution

The fourth proportional to 1,607.38, 2,411.67 and 729.85 is: 1,095.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,607.38 : 2,411.67 = 729.85 : x
  2. Step 2: Convert to fraction form
    1,607.38/2,411.67 = 729.85/x
  3. Step 3: Cross multiply
    1,607.38x = 2,411.67 × 729.85
  4. Step 4: Simplify right side
    1,607.38x = 1,760,157.35
  5. Step 5: Solve for x
    x = 1,760,157.35/1,607.38
  6. Step 6: Final answer
    x = 1,095.05

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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.