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Finding the Fourth Proportional to 545.86, 753.36 and 349.42

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Solution

The fourth proportional to 545.86, 753.36 and 349.42 is: 482.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.86 : 753.36 = 349.42 : x
  2. Step 2: Convert to fraction form
    545.86/753.36 = 349.42/x
  3. Step 3: Cross multiply
    545.86x = 753.36 × 349.42
  4. Step 4: Simplify right side
    545.86x = 263,239.05
  5. Step 5: Solve for x
    x = 263,239.05/545.86
  6. Step 6: Final answer
    x = 482.25

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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.