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Finding the Fourth Proportional to 124.76, 187.28 and 124.30

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Solution

The fourth proportional to 124.76, 187.28 and 124.30 is: 186.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.76 : 187.28 = 124.30 : x
  2. Step 2: Convert to fraction form
    124.76/187.28 = 124.30/x
  3. Step 3: Cross multiply
    124.76x = 187.28 × 124.30
  4. Step 4: Simplify right side
    124.76x = 23,277.81
  5. Step 5: Solve for x
    x = 23,277.81/124.76
  6. Step 6: Final answer
    x = 186.59

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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.