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Finding the Fourth Proportional to 841, 1,261.26 and 354.04

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Solution

The fourth proportional to 841, 1,261.26 and 354.04 is: 530.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    841 : 1,261.26 = 354.04 : x
  2. Step 2: Convert to fraction form
    841/1,261.26 = 354.04/x
  3. Step 3: Cross multiply
    841x = 1,261.26 × 354.04
  4. Step 4: Simplify right side
    841x = 446,536.49
  5. Step 5: Solve for x
    x = 446,536.49/841
  6. Step 6: Final answer
    x = 530.96

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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.