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Finding the Fourth Proportional to 65.58, 98.40 and 29.54

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Solution

The fourth proportional to 65.58, 98.40 and 29.54 is: 44.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.58 : 98.40 = 29.54 : x
  2. Step 2: Convert to fraction form
    65.58/98.40 = 29.54/x
  3. Step 3: Cross multiply
    65.58x = 98.40 × 29.54
  4. Step 4: Simplify right side
    65.58x = 2,906.74
  5. Step 5: Solve for x
    x = 2,906.74/65.58
  6. Step 6: Final answer
    x = 44.32

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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.