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Finding the Fourth Proportional to 151.16, 226.65 and 48.40

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Solution

The fourth proportional to 151.16, 226.65 and 48.40 is: 72.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.16 : 226.65 = 48.40 : x
  2. Step 2: Convert to fraction form
    151.16/226.65 = 48.40/x
  3. Step 3: Cross multiply
    151.16x = 226.65 × 48.40
  4. Step 4: Simplify right side
    151.16x = 10,969.86
  5. Step 5: Solve for x
    x = 10,969.86/151.16
  6. Step 6: Final answer
    x = 72.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.