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Finding the Fourth Proportional to 395.02, 545.06 and 229.20

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Solution

The fourth proportional to 395.02, 545.06 and 229.20 is: 316.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.02 : 545.06 = 229.20 : x
  2. Step 2: Convert to fraction form
    395.02/545.06 = 229.20/x
  3. Step 3: Cross multiply
    395.02x = 545.06 × 229.20
  4. Step 4: Simplify right side
    395.02x = 124,926.61
  5. Step 5: Solve for x
    x = 124,926.61/395.02
  6. Step 6: Final answer
    x = 316.26

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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.