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Finding the Fourth Proportional to 720.59, 1,080.85 and 233.63

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Solution

The fourth proportional to 720.59, 1,080.85 and 233.63 is: 350.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.59 : 1,080.85 = 233.63 : x
  2. Step 2: Convert to fraction form
    720.59/1,080.85 = 233.63/x
  3. Step 3: Cross multiply
    720.59x = 1,080.85 × 233.63
  4. Step 4: Simplify right side
    720.59x = 252,518.99
  5. Step 5: Solve for x
    x = 252,518.99/720.59
  6. Step 6: Final answer
    x = 350.43

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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.