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Finding the Fourth Proportional to 845.38, 1,167.48 and 753.70

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Solution

The fourth proportional to 845.38, 1,167.48 and 753.70 is: 1,040.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.38 : 1,167.48 = 753.70 : x
  2. Step 2: Convert to fraction form
    845.38/1,167.48 = 753.70/x
  3. Step 3: Cross multiply
    845.38x = 1,167.48 × 753.70
  4. Step 4: Simplify right side
    845.38x = 879,929.68
  5. Step 5: Solve for x
    x = 879,929.68/845.38
  6. Step 6: Final answer
    x = 1,040.87

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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.