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Finding the Fourth Proportional to 966.99, 1,450.40 and 480.36

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Solution

The fourth proportional to 966.99, 1,450.40 and 480.36 is: 720.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.99 : 1,450.40 = 480.36 : x
  2. Step 2: Convert to fraction form
    966.99/1,450.40 = 480.36/x
  3. Step 3: Cross multiply
    966.99x = 1,450.40 × 480.36
  4. Step 4: Simplify right side
    966.99x = 696,711.74
  5. Step 5: Solve for x
    x = 696,711.74/966.99
  6. Step 6: Final answer
    x = 720.50

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Double scale
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1.5x scale

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.