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Finding the Fourth Proportional to 151.64, 228.26 and 117.56

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Solution

The fourth proportional to 151.64, 228.26 and 117.56 is: 176.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.64 : 228.26 = 117.56 : x
  2. Step 2: Convert to fraction form
    151.64/228.26 = 117.56/x
  3. Step 3: Cross multiply
    151.64x = 228.26 × 117.56
  4. Step 4: Simplify right side
    151.64x = 26,834.25
  5. Step 5: Solve for x
    x = 26,834.25/151.64
  6. Step 6: Final answer
    x = 176.96

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.