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Finding the Fourth Proportional to 545.84, 753.25 and 321.74

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Solution

The fourth proportional to 545.84, 753.25 and 321.74 is: 444.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.84 : 753.25 = 321.74 : x
  2. Step 2: Convert to fraction form
    545.84/753.25 = 321.74/x
  3. Step 3: Cross multiply
    545.84x = 753.25 × 321.74
  4. Step 4: Simplify right side
    545.84x = 242,350.66
  5. Step 5: Solve for x
    x = 242,350.66/545.84
  6. Step 6: Final answer
    x = 444.00

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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.