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Finding the Fourth Proportional to 394.76, 591.04 and 264.58

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Solution

The fourth proportional to 394.76, 591.04 and 264.58 is: 396.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.76 : 591.04 = 264.58 : x
  2. Step 2: Convert to fraction form
    394.76/591.04 = 264.58/x
  3. Step 3: Cross multiply
    394.76x = 591.04 × 264.58
  4. Step 4: Simplify right side
    394.76x = 156,377.36
  5. Step 5: Solve for x
    x = 156,377.36/394.76
  6. Step 6: Final answer
    x = 396.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.