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Finding the Fourth Proportional to 88.63, 122.34 and 64.06

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Solution

The fourth proportional to 88.63, 122.34 and 64.06 is: 88.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.63 : 122.34 = 64.06 : x
  2. Step 2: Convert to fraction form
    88.63/122.34 = 64.06/x
  3. Step 3: Cross multiply
    88.63x = 122.34 × 64.06
  4. Step 4: Simplify right side
    88.63x = 7,837.10
  5. Step 5: Solve for x
    x = 7,837.10/88.63
  6. Step 6: Final answer
    x = 88.42

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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.