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Finding the Fourth Proportional to 1,080.02, 1,620.03 and 717.11

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Solution

The fourth proportional to 1,080.02, 1,620.03 and 717.11 is: 1,075.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.02 : 1,620.03 = 717.11 : x
  2. Step 2: Convert to fraction form
    1,080.02/1,620.03 = 717.11/x
  3. Step 3: Cross multiply
    1,080.02x = 1,620.03 × 717.11
  4. Step 4: Simplify right side
    1,080.02x = 1,161,739.71
  5. Step 5: Solve for x
    x = 1,161,739.71/1,080.02
  6. Step 6: Final answer
    x = 1,075.67

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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.