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Finding the Fourth Proportional to 147.58, 220.07 and 137.32

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Solution

The fourth proportional to 147.58, 220.07 and 137.32 is: 204.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.58 : 220.07 = 137.32 : x
  2. Step 2: Convert to fraction form
    147.58/220.07 = 137.32/x
  3. Step 3: Cross multiply
    147.58x = 220.07 × 137.32
  4. Step 4: Simplify right side
    147.58x = 30,220.01
  5. Step 5: Solve for x
    x = 30,220.01/147.58
  6. Step 6: Final answer
    x = 204.77

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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.