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Finding the Fourth Proportional to 62.08, 85.62 and 40.24

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Solution

The fourth proportional to 62.08, 85.62 and 40.24 is: 55.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.08 : 85.62 = 40.24 : x
  2. Step 2: Convert to fraction form
    62.08/85.62 = 40.24/x
  3. Step 3: Cross multiply
    62.08x = 85.62 × 40.24
  4. Step 4: Simplify right side
    62.08x = 3,445.35
  5. Step 5: Solve for x
    x = 3,445.35/62.08
  6. Step 6: Final answer
    x = 55.50

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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.