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Finding the Fourth Proportional to 700.04, 965.94 and 389.48

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Solution

The fourth proportional to 700.04, 965.94 and 389.48 is: 537.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.04 : 965.94 = 389.48 : x
  2. Step 2: Convert to fraction form
    700.04/965.94 = 389.48/x
  3. Step 3: Cross multiply
    700.04x = 965.94 × 389.48
  4. Step 4: Simplify right side
    700.04x = 376,214.31
  5. Step 5: Solve for x
    x = 376,214.31/700.04
  6. Step 6: Final answer
    x = 537.42

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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.