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Finding the Fourth Proportional to 264.99, 397.25 and 128.17

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Solution

The fourth proportional to 264.99, 397.25 and 128.17 is: 192.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.99 : 397.25 = 128.17 : x
  2. Step 2: Convert to fraction form
    264.99/397.25 = 128.17/x
  3. Step 3: Cross multiply
    264.99x = 397.25 × 128.17
  4. Step 4: Simplify right side
    264.99x = 50,915.53
  5. Step 5: Solve for x
    x = 50,915.53/264.99
  6. Step 6: Final answer
    x = 192.14

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