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Finding the Fourth Proportional to 62.36, 85.47 and 62.09

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Solution

The fourth proportional to 62.36, 85.47 and 62.09 is: 85.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.36 : 85.47 = 62.09 : x
  2. Step 2: Convert to fraction form
    62.36/85.47 = 62.09/x
  3. Step 3: Cross multiply
    62.36x = 85.47 × 62.09
  4. Step 4: Simplify right side
    62.36x = 5,306.40
  5. Step 5: Solve for x
    x = 5,306.40/62.36
  6. Step 6: Final answer
    x = 85.10

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.