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Finding the Fourth Proportional to 545.93, 753.36 and 321.89

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Solution

The fourth proportional to 545.93, 753.36 and 321.89 is: 444.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.93 : 753.36 = 321.89 : x
  2. Step 2: Convert to fraction form
    545.93/753.36 = 321.89/x
  3. Step 3: Cross multiply
    545.93x = 753.36 × 321.89
  4. Step 4: Simplify right side
    545.93x = 242,495.28
  5. Step 5: Solve for x
    x = 242,495.28/545.93
  6. Step 6: Final answer
    x = 444.19

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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.