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Finding the Fourth Proportional to 845.75, 1,167.19 and 496.64

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Solution

The fourth proportional to 845.75, 1,167.19 and 496.64 is: 685.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.75 : 1,167.19 = 496.64 : x
  2. Step 2: Convert to fraction form
    845.75/1,167.19 = 496.64/x
  3. Step 3: Cross multiply
    845.75x = 1,167.19 × 496.64
  4. Step 4: Simplify right side
    845.75x = 579,666.16
  5. Step 5: Solve for x
    x = 579,666.16/845.75
  6. Step 6: Final answer
    x = 685.39

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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.