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Finding the Fourth Proportional to 39.07, 58.31 and 34.51

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Solution

The fourth proportional to 39.07, 58.31 and 34.51 is: 51.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.07 : 58.31 = 34.51 : x
  2. Step 2: Convert to fraction form
    39.07/58.31 = 34.51/x
  3. Step 3: Cross multiply
    39.07x = 58.31 × 34.51
  4. Step 4: Simplify right side
    39.07x = 2,012.28
  5. Step 5: Solve for x
    x = 2,012.28/39.07
  6. Step 6: Final answer
    x = 51.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.