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Finding the Fourth Proportional to 364.05, 545.76 and 147.57

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Solution

The fourth proportional to 364.05, 545.76 and 147.57 is: 221.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.05 : 545.76 = 147.57 : x
  2. Step 2: Convert to fraction form
    364.05/545.76 = 147.57/x
  3. Step 3: Cross multiply
    364.05x = 545.76 × 147.57
  4. Step 4: Simplify right side
    364.05x = 80,537.80
  5. Step 5: Solve for x
    x = 80,537.80/364.05
  6. Step 6: Final answer
    x = 221.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.