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Finding the Fourth Proportional to 1,536.17, 2,308.50 and 920.16

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Solution

The fourth proportional to 1,536.17, 2,308.50 and 920.16 is: 1,382.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,536.17 : 2,308.50 = 920.16 : x
  2. Step 2: Convert to fraction form
    1,536.17/2,308.50 = 920.16/x
  3. Step 3: Cross multiply
    1,536.17x = 2,308.50 × 920.16
  4. Step 4: Simplify right side
    1,536.17x = 2,124,189.36
  5. Step 5: Solve for x
    x = 2,124,189.36/1,536.17
  6. Step 6: Final answer
    x = 1,382.79

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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.