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Finding the Fourth Proportional to 700.81, 967.11 and 438.77

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Solution

The fourth proportional to 700.81, 967.11 and 438.77 is: 605.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.81 : 967.11 = 438.77 : x
  2. Step 2: Convert to fraction form
    700.81/967.11 = 438.77/x
  3. Step 3: Cross multiply
    700.81x = 967.11 × 438.77
  4. Step 4: Simplify right side
    700.81x = 424,338.85
  5. Step 5: Solve for x
    x = 424,338.85/700.81
  6. Step 6: Final answer
    x = 605.50

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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.