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Finding the Fourth Proportional to 966.98, 1,450.68 and 317.66

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Solution

The fourth proportional to 966.98, 1,450.68 and 317.66 is: 476.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.98 : 1,450.68 = 317.66 : x
  2. Step 2: Convert to fraction form
    966.98/1,450.68 = 317.66/x
  3. Step 3: Cross multiply
    966.98x = 1,450.68 × 317.66
  4. Step 4: Simplify right side
    966.98x = 460,823.01
  5. Step 5: Solve for x
    x = 460,823.01/966.98
  6. Step 6: Final answer
    x = 476.56

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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.