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Finding the Fourth Proportional to 547.74, 755.61 and 510.15

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Solution

The fourth proportional to 547.74, 755.61 and 510.15 is: 703.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.74 : 755.61 = 510.15 : x
  2. Step 2: Convert to fraction form
    547.74/755.61 = 510.15/x
  3. Step 3: Cross multiply
    547.74x = 755.61 × 510.15
  4. Step 4: Simplify right side
    547.74x = 385,474.44
  5. Step 5: Solve for x
    x = 385,474.44/547.74
  6. Step 6: Final answer
    x = 703.75

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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.