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Finding the Fourth Proportional to 1,536.08, 2,302.50 and 755

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Solution

The fourth proportional to 1,536.08, 2,302.50 and 755 is: 1,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,536.08 : 2,302.50 = 755 : x
  2. Step 2: Convert to fraction form
    1,536.08/2,302.50 = 755/x
  3. Step 3: Cross multiply
    1,536.08x = 2,302.50 × 755
  4. Step 4: Simplify right side
    1,536.08x = 1,738,387.50
  5. Step 5: Solve for x
    x = 1,738,387.50/1,536.08
  6. Step 6: Final answer
    x = 1,131.70

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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.