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Finding the Fourth Proportional to 746.99, 1,120.44 and 302.45

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Solution

The fourth proportional to 746.99, 1,120.44 and 302.45 is: 453.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.99 : 1,120.44 = 302.45 : x
  2. Step 2: Convert to fraction form
    746.99/1,120.44 = 302.45/x
  3. Step 3: Cross multiply
    746.99x = 1,120.44 × 302.45
  4. Step 4: Simplify right side
    746.99x = 338,871.48
  5. Step 5: Solve for x
    x = 338,871.48/746.99
  6. Step 6: Final answer
    x = 453.65

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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.