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Finding the Fourth Proportional to 967.41, 1,451.94 and 420.03

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Solution

The fourth proportional to 967.41, 1,451.94 and 420.03 is: 630.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.41 : 1,451.94 = 420.03 : x
  2. Step 2: Convert to fraction form
    967.41/1,451.94 = 420.03/x
  3. Step 3: Cross multiply
    967.41x = 1,451.94 × 420.03
  4. Step 4: Simplify right side
    967.41x = 609,858.36
  5. Step 5: Solve for x
    x = 609,858.36/967.41
  6. Step 6: Final answer
    x = 630.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.