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Finding the Fourth Proportional to 545.31, 753.03 and 348.48

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Solution

The fourth proportional to 545.31, 753.03 and 348.48 is: 481.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.31 : 753.03 = 348.48 : x
  2. Step 2: Convert to fraction form
    545.31/753.03 = 348.48/x
  3. Step 3: Cross multiply
    545.31x = 753.03 × 348.48
  4. Step 4: Simplify right side
    545.31x = 262,415.89
  5. Step 5: Solve for x
    x = 262,415.89/545.31
  6. Step 6: Final answer
    x = 481.22

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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.