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Finding the Fourth Proportional to 845.70, 1,265.58 and 731.49

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Solution

The fourth proportional to 845.70, 1,265.58 and 731.49 is: 1,094.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.70 : 1,265.58 = 731.49 : x
  2. Step 2: Convert to fraction form
    845.70/1,265.58 = 731.49/x
  3. Step 3: Cross multiply
    845.70x = 1,265.58 × 731.49
  4. Step 4: Simplify right side
    845.70x = 925,759.11
  5. Step 5: Solve for x
    x = 925,759.11/845.70
  6. Step 6: Final answer
    x = 1,094.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.