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Finding the Fourth Proportional to 395.68, 545.52 and 264.40

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Solution

The fourth proportional to 395.68, 545.52 and 264.40 is: 364.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.68 : 545.52 = 264.40 : x
  2. Step 2: Convert to fraction form
    395.68/545.52 = 264.40/x
  3. Step 3: Cross multiply
    395.68x = 545.52 × 264.40
  4. Step 4: Simplify right side
    395.68x = 144,235.49
  5. Step 5: Solve for x
    x = 144,235.49/395.68
  6. Step 6: Final answer
    x = 364.53

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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.