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Finding the Fourth Proportional to 1,182.84, 1,631.48 and 1,004.58

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Solution

The fourth proportional to 1,182.84, 1,631.48 and 1,004.58 is: 1,385.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182.84 : 1,631.48 = 1,004.58 : x
  2. Step 2: Convert to fraction form
    1,182.84/1,631.48 = 1,004.58/x
  3. Step 3: Cross multiply
    1,182.84x = 1,631.48 × 1,004.58
  4. Step 4: Simplify right side
    1,182.84x = 1,638,947.16
  5. Step 5: Solve for x
    x = 1,638,947.16/1,182.84
  6. Step 6: Final answer
    x = 1,385.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.