Home / 1,157.01-1,734.46-426.40

Finding the Fourth Proportional to 1,157.01, 1,734.46 and 426.40

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Solution

The fourth proportional to 1,157.01, 1,734.46 and 426.40 is: 639.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157.01 : 1,734.46 = 426.40 : x
  2. Step 2: Convert to fraction form
    1,157.01/1,734.46 = 426.40/x
  3. Step 3: Cross multiply
    1,157.01x = 1,734.46 × 426.40
  4. Step 4: Simplify right side
    1,157.01x = 739,573.74
  5. Step 5: Solve for x
    x = 739,573.74/1,157.01
  6. Step 6: Final answer
    x = 639.21

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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.