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Finding the Fourth Proportional to 235.91, 325.55 and 148.63

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Solution

The fourth proportional to 235.91, 325.55 and 148.63 is: 205.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.91 : 325.55 = 148.63 : x
  2. Step 2: Convert to fraction form
    235.91/325.55 = 148.63/x
  3. Step 3: Cross multiply
    235.91x = 325.55 × 148.63
  4. Step 4: Simplify right side
    235.91x = 48,386.50
  5. Step 5: Solve for x
    x = 48,386.50/235.91
  6. Step 6: Final answer
    x = 205.11

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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.