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Finding the Fourth Proportional to 148.58, 204.71 and 101.94

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Solution

The fourth proportional to 148.58, 204.71 and 101.94 is: 140.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.58 : 204.71 = 101.94 : x
  2. Step 2: Convert to fraction form
    148.58/204.71 = 101.94/x
  3. Step 3: Cross multiply
    148.58x = 204.71 × 101.94
  4. Step 4: Simplify right side
    148.58x = 20,868.14
  5. Step 5: Solve for x
    x = 20,868.14/148.58
  6. Step 6: Final answer
    x = 140.45

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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.