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Finding the Fourth Proportional to 124.91, 187.40 and 56.44

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Solution

The fourth proportional to 124.91, 187.40 and 56.44 is: 84.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.91 : 187.40 = 56.44 : x
  2. Step 2: Convert to fraction form
    124.91/187.40 = 56.44/x
  3. Step 3: Cross multiply
    124.91x = 187.40 × 56.44
  4. Step 4: Simplify right side
    124.91x = 10,575.92
  5. Step 5: Solve for x
    x = 10,575.92/124.91
  6. Step 6: Final answer
    x = 84.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.