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Finding the Fourth Proportional to 1,213.83, 1,820.97 and 473.81

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Solution

The fourth proportional to 1,213.83, 1,820.97 and 473.81 is: 710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213.83 : 1,820.97 = 473.81 : x
  2. Step 2: Convert to fraction form
    1,213.83/1,820.97 = 473.81/x
  3. Step 3: Cross multiply
    1,213.83x = 1,820.97 × 473.81
  4. Step 4: Simplify right side
    1,213.83x = 862,784.69
  5. Step 5: Solve for x
    x = 862,784.69/1,213.83
  6. Step 6: Final answer
    x = 710.80

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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.