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Finding the Fourth Proportional to 62.18, 92.90 and 46.92

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Solution

The fourth proportional to 62.18, 92.90 and 46.92 is: 70.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.18 : 92.90 = 46.92 : x
  2. Step 2: Convert to fraction form
    62.18/92.90 = 46.92/x
  3. Step 3: Cross multiply
    62.18x = 92.90 × 46.92
  4. Step 4: Simplify right side
    62.18x = 4,358.87
  5. Step 5: Solve for x
    x = 4,358.87/62.18
  6. Step 6: Final answer
    x = 70.10

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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.