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Finding the Fourth Proportional to 65.62, 98.40 and 29.53

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Solution

The fourth proportional to 65.62, 98.40 and 29.53 is: 44.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.62 : 98.40 = 29.53 : x
  2. Step 2: Convert to fraction form
    65.62/98.40 = 29.53/x
  3. Step 3: Cross multiply
    65.62x = 98.40 × 29.53
  4. Step 4: Simplify right side
    65.62x = 2,905.82
  5. Step 5: Solve for x
    x = 2,905.82/65.62
  6. Step 6: Final answer
    x = 44.28

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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.