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Finding the Fourth Proportional to 848.84, 1,168.12 and 778.96

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Solution

The fourth proportional to 848.84, 1,168.12 and 778.96 is: 1,071.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.84 : 1,168.12 = 778.96 : x
  2. Step 2: Convert to fraction form
    848.84/1,168.12 = 778.96/x
  3. Step 3: Cross multiply
    848.84x = 1,168.12 × 778.96
  4. Step 4: Simplify right side
    848.84x = 909,918.76
  5. Step 5: Solve for x
    x = 909,918.76/848.84
  6. Step 6: Final answer
    x = 1,071.96

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1.5x scale

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.