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Finding the Fourth Proportional to 700.72, 967.36 and 479.84

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Solution

The fourth proportional to 700.72, 967.36 and 479.84 is: 662.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.72 : 967.36 = 479.84 : x
  2. Step 2: Convert to fraction form
    700.72/967.36 = 479.84/x
  3. Step 3: Cross multiply
    700.72x = 967.36 × 479.84
  4. Step 4: Simplify right side
    700.72x = 464,178.02
  5. Step 5: Solve for x
    x = 464,178.02/700.72
  6. Step 6: Final answer
    x = 662.43

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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.