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Finding the Fourth Proportional to 701.26, 967.80 and 421.54

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Solution

The fourth proportional to 701.26, 967.80 and 421.54 is: 581.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.26 : 967.80 = 421.54 : x
  2. Step 2: Convert to fraction form
    701.26/967.80 = 421.54/x
  3. Step 3: Cross multiply
    701.26x = 967.80 × 421.54
  4. Step 4: Simplify right side
    701.26x = 407,966.41
  5. Step 5: Solve for x
    x = 407,966.41/701.26
  6. Step 6: Final answer
    x = 581.76

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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.