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Finding the Fourth Proportional to 848.16, 1,278.60 and 792.48

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Solution

The fourth proportional to 848.16, 1,278.60 and 792.48 is: 1,194.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.16 : 1,278.60 = 792.48 : x
  2. Step 2: Convert to fraction form
    848.16/1,278.60 = 792.48/x
  3. Step 3: Cross multiply
    848.16x = 1,278.60 × 792.48
  4. Step 4: Simplify right side
    848.16x = 1,013,264.93
  5. Step 5: Solve for x
    x = 1,013,264.93/848.16
  6. Step 6: Final answer
    x = 1,194.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.