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Finding the Fourth Proportional to 358.33, 537.52 and 139.06

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Solution

The fourth proportional to 358.33, 537.52 and 139.06 is: 208.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.33 : 537.52 = 139.06 : x
  2. Step 2: Convert to fraction form
    358.33/537.52 = 139.06/x
  3. Step 3: Cross multiply
    358.33x = 537.52 × 139.06
  4. Step 4: Simplify right side
    358.33x = 74,747.53
  5. Step 5: Solve for x
    x = 74,747.53/358.33
  6. Step 6: Final answer
    x = 208.60

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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.