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Finding the Fourth Proportional to 845.44, 1,164.96 and 790.24

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Solution

The fourth proportional to 845.44, 1,164.96 and 790.24 is: 1,088.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.44 : 1,164.96 = 790.24 : x
  2. Step 2: Convert to fraction form
    845.44/1,164.96 = 790.24/x
  3. Step 3: Cross multiply
    845.44x = 1,164.96 × 790.24
  4. Step 4: Simplify right side
    845.44x = 920,597.99
  5. Step 5: Solve for x
    x = 920,597.99/845.44
  6. Step 6: Final answer
    x = 1,088.90

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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.