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Finding the Fourth Proportional to 58.37, 86.85 and 57.94

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Solution

The fourth proportional to 58.37, 86.85 and 57.94 is: 86.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.37 : 86.85 = 57.94 : x
  2. Step 2: Convert to fraction form
    58.37/86.85 = 57.94/x
  3. Step 3: Cross multiply
    58.37x = 86.85 × 57.94
  4. Step 4: Simplify right side
    58.37x = 5,031.87
  5. Step 5: Solve for x
    x = 5,031.87/58.37
  6. Step 6: Final answer
    x = 86.21

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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.