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Finding the Fourth Proportional to 1,484.70, 2,048.83 and 812.52

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Solution

The fourth proportional to 1,484.70, 2,048.83 and 812.52 is: 1,121.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,484.70 : 2,048.83 = 812.52 : x
  2. Step 2: Convert to fraction form
    1,484.70/2,048.83 = 812.52/x
  3. Step 3: Cross multiply
    1,484.70x = 2,048.83 × 812.52
  4. Step 4: Simplify right side
    1,484.70x = 1,664,715.35
  5. Step 5: Solve for x
    x = 1,664,715.35/1,484.70
  6. Step 6: Final answer
    x = 1,121.25

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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.