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Finding the Fourth Proportional to 848.58, 1,170.74 and 671.57

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Solution

The fourth proportional to 848.58, 1,170.74 and 671.57 is: 926.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.58 : 1,170.74 = 671.57 : x
  2. Step 2: Convert to fraction form
    848.58/1,170.74 = 671.57/x
  3. Step 3: Cross multiply
    848.58x = 1,170.74 × 671.57
  4. Step 4: Simplify right side
    848.58x = 786,233.43
  5. Step 5: Solve for x
    x = 786,233.43/848.58
  6. Step 6: Final answer
    x = 926.53

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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.