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Finding the Fourth Proportional to 1,114.29, 1,672.04 and 999.27

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Solution

The fourth proportional to 1,114.29, 1,672.04 and 999.27 is: 1,499.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,114.29 : 1,672.04 = 999.27 : x
  2. Step 2: Convert to fraction form
    1,114.29/1,672.04 = 999.27/x
  3. Step 3: Cross multiply
    1,114.29x = 1,672.04 × 999.27
  4. Step 4: Simplify right side
    1,114.29x = 1,670,821.91
  5. Step 5: Solve for x
    x = 1,670,821.91/1,114.29
  6. Step 6: Final answer
    x = 1,499.45

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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.