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Finding the Fourth Proportional to 58.07, 86.67 and 54.51

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Solution

The fourth proportional to 58.07, 86.67 and 54.51 is: 81.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.07 : 86.67 = 54.51 : x
  2. Step 2: Convert to fraction form
    58.07/86.67 = 54.51/x
  3. Step 3: Cross multiply
    58.07x = 86.67 × 54.51
  4. Step 4: Simplify right side
    58.07x = 4,724.38
  5. Step 5: Solve for x
    x = 4,724.38/58.07
  6. Step 6: Final answer
    x = 81.36

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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.