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Finding the Fourth Proportional to 734.82, 1,014.27 and 420.26

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Solution

The fourth proportional to 734.82, 1,014.27 and 420.26 is: 580.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.82 : 1,014.27 = 420.26 : x
  2. Step 2: Convert to fraction form
    734.82/1,014.27 = 420.26/x
  3. Step 3: Cross multiply
    734.82x = 1,014.27 × 420.26
  4. Step 4: Simplify right side
    734.82x = 426,258.60
  5. Step 5: Solve for x
    x = 426,258.60/734.82
  6. Step 6: Final answer
    x = 580.09

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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.