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Finding the Fourth Proportional to 759.99, 1,048.50 and 480.12

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Solution

The fourth proportional to 759.99, 1,048.50 and 480.12 is: 662.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    759.99 : 1,048.50 = 480.12 : x
  2. Step 2: Convert to fraction form
    759.99/1,048.50 = 480.12/x
  3. Step 3: Cross multiply
    759.99x = 1,048.50 × 480.12
  4. Step 4: Simplify right side
    759.99x = 503,405.82
  5. Step 5: Solve for x
    x = 503,405.82/759.99
  6. Step 6: Final answer
    x = 662.38

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.