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Finding the Fourth Proportional to 543.57, 750.07 and 319.50

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Solution

The fourth proportional to 543.57, 750.07 and 319.50 is: 440.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.57 : 750.07 = 319.50 : x
  2. Step 2: Convert to fraction form
    543.57/750.07 = 319.50/x
  3. Step 3: Cross multiply
    543.57x = 750.07 × 319.50
  4. Step 4: Simplify right side
    543.57x = 239,648.44
  5. Step 5: Solve for x
    x = 239,648.44/543.57
  6. Step 6: Final answer
    x = 440.88

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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.