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Finding the Fourth Proportional to 1,536.40, 2,304.72 and 756.82

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Solution

The fourth proportional to 1,536.40, 2,304.72 and 756.82 is: 1,135.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,536.40 : 2,304.72 = 756.82 : x
  2. Step 2: Convert to fraction form
    1,536.40/2,304.72 = 756.82/x
  3. Step 3: Cross multiply
    1,536.40x = 2,304.72 × 756.82
  4. Step 4: Simplify right side
    1,536.40x = 1,744,258.19
  5. Step 5: Solve for x
    x = 1,744,258.19/1,536.40
  6. Step 6: Final answer
    x = 1,135.29

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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.