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Finding the Fourth Proportional to 1,212.31, 1,819.07 and 562.93

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Solution

The fourth proportional to 1,212.31, 1,819.07 and 562.93 is: 844.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212.31 : 1,819.07 = 562.93 : x
  2. Step 2: Convert to fraction form
    1,212.31/1,819.07 = 562.93/x
  3. Step 3: Cross multiply
    1,212.31x = 1,819.07 × 562.93
  4. Step 4: Simplify right side
    1,212.31x = 1,024,009.08
  5. Step 5: Solve for x
    x = 1,024,009.08/1,212.31
  6. Step 6: Final answer
    x = 844.68

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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.