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Finding the Fourth Proportional to 1,323.99, 1,984.98 and 630.69

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Solution

The fourth proportional to 1,323.99, 1,984.98 and 630.69 is: 945.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.99 : 1,984.98 = 630.69 : x
  2. Step 2: Convert to fraction form
    1,323.99/1,984.98 = 630.69/x
  3. Step 3: Cross multiply
    1,323.99x = 1,984.98 × 630.69
  4. Step 4: Simplify right side
    1,323.99x = 1,251,907.04
  5. Step 5: Solve for x
    x = 1,251,907.04/1,323.99
  6. Step 6: Final answer
    x = 945.56

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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.