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Finding the Fourth Proportional to 351.90, 530.73 and 347.40

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Solution

The fourth proportional to 351.90, 530.73 and 347.40 is: 523.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.90 : 530.73 = 347.40 : x
  2. Step 2: Convert to fraction form
    351.90/530.73 = 347.40/x
  3. Step 3: Cross multiply
    351.90x = 530.73 × 347.40
  4. Step 4: Simplify right side
    351.90x = 184,375.60
  5. Step 5: Solve for x
    x = 184,375.60/351.90
  6. Step 6: Final answer
    x = 523.94

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.