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Finding the Fourth Proportional to 545.96, 753.75 and 349.80

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Solution

The fourth proportional to 545.96, 753.75 and 349.80 is: 482.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.96 : 753.75 = 349.80 : x
  2. Step 2: Convert to fraction form
    545.96/753.75 = 349.80/x
  3. Step 3: Cross multiply
    545.96x = 753.75 × 349.80
  4. Step 4: Simplify right side
    545.96x = 263,661.75
  5. Step 5: Solve for x
    x = 263,661.75/545.96
  6. Step 6: Final answer
    x = 482.94

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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.