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Finding the Fourth Proportional to 545.95, 755.36 and 462.79

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Solution

The fourth proportional to 545.95, 755.36 and 462.79 is: 640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.95 : 755.36 = 462.79 : x
  2. Step 2: Convert to fraction form
    545.95/755.36 = 462.79/x
  3. Step 3: Cross multiply
    545.95x = 755.36 × 462.79
  4. Step 4: Simplify right side
    545.95x = 349,573.05
  5. Step 5: Solve for x
    x = 349,573.05/545.95
  6. Step 6: Final answer
    x = 640.30

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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.