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Finding the Fourth Proportional to 848.35, 1,170.80 and 475.43

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Solution

The fourth proportional to 848.35, 1,170.80 and 475.43 is: 656.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.35 : 1,170.80 = 475.43 : x
  2. Step 2: Convert to fraction form
    848.35/1,170.80 = 475.43/x
  3. Step 3: Cross multiply
    848.35x = 1,170.80 × 475.43
  4. Step 4: Simplify right side
    848.35x = 556,628.78
  5. Step 5: Solve for x
    x = 556,628.78/848.35
  6. Step 6: Final answer
    x = 656.13

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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.