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Finding the Fourth Proportional to 752.60, 1,127.10 and 443.72

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Solution

The fourth proportional to 752.60, 1,127.10 and 443.72 is: 664.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    752.60 : 1,127.10 = 443.72 : x
  2. Step 2: Convert to fraction form
    752.60/1,127.10 = 443.72/x
  3. Step 3: Cross multiply
    752.60x = 1,127.10 × 443.72
  4. Step 4: Simplify right side
    752.60x = 500,116.81
  5. Step 5: Solve for x
    x = 500,116.81/752.60
  6. Step 6: Final answer
    x = 664.52

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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.