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Finding the Fourth Proportional to 205.07, 307.60 and 58.81

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Solution

The fourth proportional to 205.07, 307.60 and 58.81 is: 88.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.07 : 307.60 = 58.81 : x
  2. Step 2: Convert to fraction form
    205.07/307.60 = 58.81/x
  3. Step 3: Cross multiply
    205.07x = 307.60 × 58.81
  4. Step 4: Simplify right side
    205.07x = 18,089.96
  5. Step 5: Solve for x
    x = 18,089.96/205.07
  6. Step 6: Final answer
    x = 88.22

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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.