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Finding the Fourth Proportional to 1,628.84, 2,445.53 and 849.42

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Solution

The fourth proportional to 1,628.84, 2,445.53 and 849.42 is: 1,275.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.84 : 2,445.53 = 849.42 : x
  2. Step 2: Convert to fraction form
    1,628.84/2,445.53 = 849.42/x
  3. Step 3: Cross multiply
    1,628.84x = 2,445.53 × 849.42
  4. Step 4: Simplify right side
    1,628.84x = 2,077,277.85
  5. Step 5: Solve for x
    x = 2,077,277.85/1,628.84
  6. Step 6: Final answer
    x = 1,275.31

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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.