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Finding the Fourth Proportional to 58.41, 87.09 and 57.69

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Solution

The fourth proportional to 58.41, 87.09 and 57.69 is: 86.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.41 : 87.09 = 57.69 : x
  2. Step 2: Convert to fraction form
    58.41/87.09 = 57.69/x
  3. Step 3: Cross multiply
    58.41x = 87.09 × 57.69
  4. Step 4: Simplify right side
    58.41x = 5,024.22
  5. Step 5: Solve for x
    x = 5,024.22/58.41
  6. Step 6: Final answer
    x = 86.02

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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.