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Finding the Fourth Proportional to 116.36, 174.51 and 39.30

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Solution

The fourth proportional to 116.36, 174.51 and 39.30 is: 58.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.36 : 174.51 = 39.30 : x
  2. Step 2: Convert to fraction form
    116.36/174.51 = 39.30/x
  3. Step 3: Cross multiply
    116.36x = 174.51 × 39.30
  4. Step 4: Simplify right side
    116.36x = 6,858.24
  5. Step 5: Solve for x
    x = 6,858.24/116.36
  6. Step 6: Final answer
    x = 58.94

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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.