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Finding the Fourth Proportional to 64.88, 97.16 and 52.88

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Solution

The fourth proportional to 64.88, 97.16 and 52.88 is: 79.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.88 : 97.16 = 52.88 : x
  2. Step 2: Convert to fraction form
    64.88/97.16 = 52.88/x
  3. Step 3: Cross multiply
    64.88x = 97.16 × 52.88
  4. Step 4: Simplify right side
    64.88x = 5,137.82
  5. Step 5: Solve for x
    x = 5,137.82/64.88
  6. Step 6: Final answer
    x = 79.19

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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.