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Finding the Fourth Proportional to 62.23, 85.95 and 59.20

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Solution

The fourth proportional to 62.23, 85.95 and 59.20 is: 81.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.23 : 85.95 = 59.20 : x
  2. Step 2: Convert to fraction form
    62.23/85.95 = 59.20/x
  3. Step 3: Cross multiply
    62.23x = 85.95 × 59.20
  4. Step 4: Simplify right side
    62.23x = 5,088.24
  5. Step 5: Solve for x
    x = 5,088.24/62.23
  6. Step 6: Final answer
    x = 81.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.