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Finding the Fourth Proportional to 967.41, 1,451.11 and 390.69

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Solution

The fourth proportional to 967.41, 1,451.11 and 390.69 is: 586.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.41 : 1,451.11 = 390.69 : x
  2. Step 2: Convert to fraction form
    967.41/1,451.11 = 390.69/x
  3. Step 3: Cross multiply
    967.41x = 1,451.11 × 390.69
  4. Step 4: Simplify right side
    967.41x = 566,934.17
  5. Step 5: Solve for x
    x = 566,934.17/967.41
  6. Step 6: Final answer
    x = 586.03

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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.