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Finding the Fourth Proportional to 547.86, 755.73 and 340.50

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Solution

The fourth proportional to 547.86, 755.73 and 340.50 is: 469.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.86 : 755.73 = 340.50 : x
  2. Step 2: Convert to fraction form
    547.86/755.73 = 340.50/x
  3. Step 3: Cross multiply
    547.86x = 755.73 × 340.50
  4. Step 4: Simplify right side
    547.86x = 257,326.07
  5. Step 5: Solve for x
    x = 257,326.07/547.86
  6. Step 6: Final answer
    x = 469.69

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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.