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Finding the Fourth Proportional to 1,159.53, 1,739.22 and 543.38

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Solution

The fourth proportional to 1,159.53, 1,739.22 and 543.38 is: 815.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159.53 : 1,739.22 = 543.38 : x
  2. Step 2: Convert to fraction form
    1,159.53/1,739.22 = 543.38/x
  3. Step 3: Cross multiply
    1,159.53x = 1,739.22 × 543.38
  4. Step 4: Simplify right side
    1,159.53x = 945,048.67
  5. Step 5: Solve for x
    x = 945,048.67/1,159.53
  6. Step 6: Final answer
    x = 815.03

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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.