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Finding the Fourth Proportional to 848.90, 1,171.22 and 475.83

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Solution

The fourth proportional to 848.90, 1,171.22 and 475.83 is: 656.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.90 : 1,171.22 = 475.83 : x
  2. Step 2: Convert to fraction form
    848.90/1,171.22 = 475.83/x
  3. Step 3: Cross multiply
    848.90x = 1,171.22 × 475.83
  4. Step 4: Simplify right side
    848.90x = 557,302.80
  5. Step 5: Solve for x
    x = 557,302.80/848.90
  6. Step 6: Final answer
    x = 656.50

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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.