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Finding the Fourth Proportional to 1,475.69, 2,036.44 and 812.53

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Solution

The fourth proportional to 1,475.69, 2,036.44 and 812.53 is: 1,121.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.69 : 2,036.44 = 812.53 : x
  2. Step 2: Convert to fraction form
    1,475.69/2,036.44 = 812.53/x
  3. Step 3: Cross multiply
    1,475.69x = 2,036.44 × 812.53
  4. Step 4: Simplify right side
    1,475.69x = 1,654,668.59
  5. Step 5: Solve for x
    x = 1,654,668.59/1,475.69
  6. Step 6: Final answer
    x = 1,121.28

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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.