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Finding the Fourth Proportional to 213.47, 294.60 and 148.13

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Solution

The fourth proportional to 213.47, 294.60 and 148.13 is: 204.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.47 : 294.60 = 148.13 : x
  2. Step 2: Convert to fraction form
    213.47/294.60 = 148.13/x
  3. Step 3: Cross multiply
    213.47x = 294.60 × 148.13
  4. Step 4: Simplify right side
    213.47x = 43,639.29
  5. Step 5: Solve for x
    x = 43,639.29/213.47
  6. Step 6: Final answer
    x = 204.43

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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.