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Finding the Fourth Proportional to 879.99, 1,319.99 and 332.03

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Solution

The fourth proportional to 879.99, 1,319.99 and 332.03 is: 498.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    879.99 : 1,319.99 = 332.03 : x
  2. Step 2: Convert to fraction form
    879.99/1,319.99 = 332.03/x
  3. Step 3: Cross multiply
    879.99x = 1,319.99 × 332.03
  4. Step 4: Simplify right side
    879.99x = 438,268.02
  5. Step 5: Solve for x
    x = 438,268.02/879.99
  6. Step 6: Final answer
    x = 498.04

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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.