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Finding the Fourth Proportional to 395.21, 545.54 and 264.17

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Solution

The fourth proportional to 395.21, 545.54 and 264.17 is: 364.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.21 : 545.54 = 264.17 : x
  2. Step 2: Convert to fraction form
    395.21/545.54 = 264.17/x
  3. Step 3: Cross multiply
    395.21x = 545.54 × 264.17
  4. Step 4: Simplify right side
    395.21x = 144,111.25
  5. Step 5: Solve for x
    x = 144,111.25/395.21
  6. Step 6: Final answer
    x = 364.65

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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.