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Finding the Fourth Proportional to 1,153.94, 1,728.31 and 536.35

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Solution

The fourth proportional to 1,153.94, 1,728.31 and 536.35 is: 803.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153.94 : 1,728.31 = 536.35 : x
  2. Step 2: Convert to fraction form
    1,153.94/1,728.31 = 536.35/x
  3. Step 3: Cross multiply
    1,153.94x = 1,728.31 × 536.35
  4. Step 4: Simplify right side
    1,153.94x = 926,969.09
  5. Step 5: Solve for x
    x = 926,969.09/1,153.94
  6. Step 6: Final answer
    x = 803.31

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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.