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Finding the Fourth Proportional to 235.66, 325.40 and 148.36

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Solution

The fourth proportional to 235.66, 325.40 and 148.36 is: 204.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.66 : 325.40 = 148.36 : x
  2. Step 2: Convert to fraction form
    235.66/325.40 = 148.36/x
  3. Step 3: Cross multiply
    235.66x = 325.40 × 148.36
  4. Step 4: Simplify right side
    235.66x = 48,276.34
  5. Step 5: Solve for x
    x = 48,276.34/235.66
  6. Step 6: Final answer
    x = 204.86

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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.