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Finding the Fourth Proportional to 700.94, 967.28 and 406.21

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Solution

The fourth proportional to 700.94, 967.28 and 406.21 is: 560.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.94 : 967.28 = 406.21 : x
  2. Step 2: Convert to fraction form
    700.94/967.28 = 406.21/x
  3. Step 3: Cross multiply
    700.94x = 967.28 × 406.21
  4. Step 4: Simplify right side
    700.94x = 392,918.81
  5. Step 5: Solve for x
    x = 392,918.81/700.94
  6. Step 6: Final answer
    x = 560.56

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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.