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Finding the Fourth Proportional to 62.43, 93.51 and 61.20

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Solution

The fourth proportional to 62.43, 93.51 and 61.20 is: 91.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.43 : 93.51 = 61.20 : x
  2. Step 2: Convert to fraction form
    62.43/93.51 = 61.20/x
  3. Step 3: Cross multiply
    62.43x = 93.51 × 61.20
  4. Step 4: Simplify right side
    62.43x = 5,722.81
  5. Step 5: Solve for x
    x = 5,722.81/62.43
  6. Step 6: Final answer
    x = 91.67

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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.