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Finding the Fourth Proportional to 1,445.08, 1,992.18 and 1,134.04

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Solution

The fourth proportional to 1,445.08, 1,992.18 and 1,134.04 is: 1,563.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.08 : 1,992.18 = 1,134.04 : x
  2. Step 2: Convert to fraction form
    1,445.08/1,992.18 = 1,134.04/x
  3. Step 3: Cross multiply
    1,445.08x = 1,992.18 × 1,134.04
  4. Step 4: Simplify right side
    1,445.08x = 2,259,211.81
  5. Step 5: Solve for x
    x = 2,259,211.81/1,445.08
  6. Step 6: Final answer
    x = 1,563.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.