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Finding the Fourth Proportional to 58.58, 87.37 and 57.55

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Solution

The fourth proportional to 58.58, 87.37 and 57.55 is: 85.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.58 : 87.37 = 57.55 : x
  2. Step 2: Convert to fraction form
    58.58/87.37 = 57.55/x
  3. Step 3: Cross multiply
    58.58x = 87.37 × 57.55
  4. Step 4: Simplify right side
    58.58x = 5,027.86
  5. Step 5: Solve for x
    x = 5,027.86/58.58
  6. Step 6: Final answer
    x = 85.84

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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.