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Finding the Fourth Proportional to 543.72, 750.84 and 347.64

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Solution

The fourth proportional to 543.72, 750.84 and 347.64 is: 480.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.72 : 750.84 = 347.64 : x
  2. Step 2: Convert to fraction form
    543.72/750.84 = 347.64/x
  3. Step 3: Cross multiply
    543.72x = 750.84 × 347.64
  4. Step 4: Simplify right side
    543.72x = 261,022.02
  5. Step 5: Solve for x
    x = 261,022.02/543.72
  6. Step 6: Final answer
    x = 480.07

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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.