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Finding the Fourth Proportional to 848.90, 1,170.28 and 699.00

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Solution

The fourth proportional to 848.90, 1,170.28 and 699.00 is: 963.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.90 : 1,170.28 = 699.00 : x
  2. Step 2: Convert to fraction form
    848.90/1,170.28 = 699.00/x
  3. Step 3: Cross multiply
    848.90x = 1,170.28 × 699.00
  4. Step 4: Simplify right side
    848.90x = 818,022.21
  5. Step 5: Solve for x
    x = 818,022.21/848.90
  6. Step 6: Final answer
    x = 963.63

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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.