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Finding the Fourth Proportional to 65.53, 97.75 and 64.63

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Solution

The fourth proportional to 65.53, 97.75 and 64.63 is: 96.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.53 : 97.75 = 64.63 : x
  2. Step 2: Convert to fraction form
    65.53/97.75 = 64.63/x
  3. Step 3: Cross multiply
    65.53x = 97.75 × 64.63
  4. Step 4: Simplify right side
    65.53x = 6,317.58
  5. Step 5: Solve for x
    x = 6,317.58/65.53
  6. Step 6: Final answer
    x = 96.41

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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.