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Finding the Fourth Proportional to 545.82, 753.26 and 321.83

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Solution

The fourth proportional to 545.82, 753.26 and 321.83 is: 444.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.82 : 753.26 = 321.83 : x
  2. Step 2: Convert to fraction form
    545.82/753.26 = 321.83/x
  3. Step 3: Cross multiply
    545.82x = 753.26 × 321.83
  4. Step 4: Simplify right side
    545.82x = 242,422.47
  5. Step 5: Solve for x
    x = 242,422.47/545.82
  6. Step 6: Final answer
    x = 444.14

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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.