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Finding the Fourth Proportional to 203, 304.55 and 58.72

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Solution

The fourth proportional to 203, 304.55 and 58.72 is: 88.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    203 : 304.55 = 58.72 : x
  2. Step 2: Convert to fraction form
    203/304.55 = 58.72/x
  3. Step 3: Cross multiply
    203x = 304.55 × 58.72
  4. Step 4: Simplify right side
    203x = 17,883.18
  5. Step 5: Solve for x
    x = 17,883.18/203
  6. Step 6: Final answer
    x = 88.09

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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.