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Finding the Fourth Proportional to 1,052.46, 1,452.52 and 720.76

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Solution

The fourth proportional to 1,052.46, 1,452.52 and 720.76 is: 994.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052.46 : 1,452.52 = 720.76 : x
  2. Step 2: Convert to fraction form
    1,052.46/1,452.52 = 720.76/x
  3. Step 3: Cross multiply
    1,052.46x = 1,452.52 × 720.76
  4. Step 4: Simplify right side
    1,052.46x = 1,046,918.32
  5. Step 5: Solve for x
    x = 1,046,918.32/1,052.46
  6. Step 6: Final answer
    x = 994.73

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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.