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Finding the Fourth Proportional to 848.00, 1,169.75 and 638.10

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Solution

The fourth proportional to 848.00, 1,169.75 and 638.10 is: 880.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.00 : 1,169.75 = 638.10 : x
  2. Step 2: Convert to fraction form
    848.00/1,169.75 = 638.10/x
  3. Step 3: Cross multiply
    848.00x = 1,169.75 × 638.10
  4. Step 4: Simplify right side
    848.00x = 746,419.07
  5. Step 5: Solve for x
    x = 746,419.07/848.00
  6. Step 6: Final answer
    x = 880.21

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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.