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Finding the Fourth Proportional to 545.80, 818.50 and 299.18

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Solution

The fourth proportional to 545.80, 818.50 and 299.18 is: 448.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.80 : 818.50 = 299.18 : x
  2. Step 2: Convert to fraction form
    545.80/818.50 = 299.18/x
  3. Step 3: Cross multiply
    545.80x = 818.50 × 299.18
  4. Step 4: Simplify right side
    545.80x = 244,878.83
  5. Step 5: Solve for x
    x = 244,878.83/545.80
  6. Step 6: Final answer
    x = 448.66

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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.