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Finding the Fourth Proportional to 700.88, 967.22 and 390.38

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Solution

The fourth proportional to 700.88, 967.22 and 390.38 is: 538.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.88 : 967.22 = 390.38 : x
  2. Step 2: Convert to fraction form
    700.88/967.22 = 390.38/x
  3. Step 3: Cross multiply
    700.88x = 967.22 × 390.38
  4. Step 4: Simplify right side
    700.88x = 377,576.56
  5. Step 5: Solve for x
    x = 377,576.56/700.88
  6. Step 6: Final answer
    x = 538.72

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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.