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Finding the Fourth Proportional to 700.07, 966.09 and 389.57

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Solution

The fourth proportional to 700.07, 966.09 and 389.57 is: 537.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.07 : 966.09 = 389.57 : x
  2. Step 2: Convert to fraction form
    700.07/966.09 = 389.57/x
  3. Step 3: Cross multiply
    700.07x = 966.09 × 389.57
  4. Step 4: Simplify right side
    700.07x = 376,354.85
  5. Step 5: Solve for x
    x = 376,354.85/700.07
  6. Step 6: Final answer
    x = 537.60

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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.