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Finding the Fourth Proportional to 1,384.13, 2,076.20 and 358.13

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Solution

The fourth proportional to 1,384.13, 2,076.20 and 358.13 is: 537.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384.13 : 2,076.20 = 358.13 : x
  2. Step 2: Convert to fraction form
    1,384.13/2,076.20 = 358.13/x
  3. Step 3: Cross multiply
    1,384.13x = 2,076.20 × 358.13
  4. Step 4: Simplify right side
    1,384.13x = 743,537.33
  5. Step 5: Solve for x
    x = 743,537.33/1,384.13
  6. Step 6: Final answer
    x = 537.19

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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.