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Finding the Fourth Proportional to 1,555.68, 2,334.56 and 734.88

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Solution

The fourth proportional to 1,555.68, 2,334.56 and 734.88 is: 1,102.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.68 : 2,334.56 = 734.88 : x
  2. Step 2: Convert to fraction form
    1,555.68/2,334.56 = 734.88/x
  3. Step 3: Cross multiply
    1,555.68x = 2,334.56 × 734.88
  4. Step 4: Simplify right side
    1,555.68x = 1,715,621.45
  5. Step 5: Solve for x
    x = 1,715,621.45/1,555.68
  6. Step 6: Final answer
    x = 1,102.81

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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.