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Finding the Fourth Proportional to 619.11, 852.12 and 574.36

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Solution

The fourth proportional to 619.11, 852.12 and 574.36 is: 790.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.11 : 852.12 = 574.36 : x
  2. Step 2: Convert to fraction form
    619.11/852.12 = 574.36/x
  3. Step 3: Cross multiply
    619.11x = 852.12 × 574.36
  4. Step 4: Simplify right side
    619.11x = 489,421.51
  5. Step 5: Solve for x
    x = 489,421.51/619.11
  6. Step 6: Final answer
    x = 790.52

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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.