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Finding the Fourth Proportional to 967.83, 1,451.15 and 318.39

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Solution

The fourth proportional to 967.83, 1,451.15 and 318.39 is: 477.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.83 : 1,451.15 = 318.39 : x
  2. Step 2: Convert to fraction form
    967.83/1,451.15 = 318.39/x
  3. Step 3: Cross multiply
    967.83x = 1,451.15 × 318.39
  4. Step 4: Simplify right side
    967.83x = 462,030.06
  5. Step 5: Solve for x
    x = 462,030.06/967.83
  6. Step 6: Final answer
    x = 477.39

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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.