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Finding the Fourth Proportional to 62.66, 86.47 and 35.03

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Solution

The fourth proportional to 62.66, 86.47 and 35.03 is: 48.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.66 : 86.47 = 35.03 : x
  2. Step 2: Convert to fraction form
    62.66/86.47 = 35.03/x
  3. Step 3: Cross multiply
    62.66x = 86.47 × 35.03
  4. Step 4: Simplify right side
    62.66x = 3,028.85
  5. Step 5: Solve for x
    x = 3,028.85/62.66
  6. Step 6: Final answer
    x = 48.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.