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Finding the Fourth Proportional to 148.37, 204.66 and 89.37

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Solution

The fourth proportional to 148.37, 204.66 and 89.37 is: 123.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.37 : 204.66 = 89.37 : x
  2. Step 2: Convert to fraction form
    148.37/204.66 = 89.37/x
  3. Step 3: Cross multiply
    148.37x = 204.66 × 89.37
  4. Step 4: Simplify right side
    148.37x = 18,290.46
  5. Step 5: Solve for x
    x = 18,290.46/148.37
  6. Step 6: Final answer
    x = 123.28

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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.