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Finding the Fourth Proportional to 1,475.57, 2,036.21 and 812.29

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Solution

The fourth proportional to 1,475.57, 2,036.21 and 812.29 is: 1,120.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.57 : 2,036.21 = 812.29 : x
  2. Step 2: Convert to fraction form
    1,475.57/2,036.21 = 812.29/x
  3. Step 3: Cross multiply
    1,475.57x = 2,036.21 × 812.29
  4. Step 4: Simplify right side
    1,475.57x = 1,653,990.55
  5. Step 5: Solve for x
    x = 1,653,990.55/1,475.57
  6. Step 6: Final answer
    x = 1,120.92

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