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Finding the Fourth Proportional to 153.48, 228.75 and 153.22

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Solution

The fourth proportional to 153.48, 228.75 and 153.22 is: 228.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.48 : 228.75 = 153.22 : x
  2. Step 2: Convert to fraction form
    153.48/228.75 = 153.22/x
  3. Step 3: Cross multiply
    153.48x = 228.75 × 153.22
  4. Step 4: Simplify right side
    153.48x = 35,049.08
  5. Step 5: Solve for x
    x = 35,049.08/153.48
  6. Step 6: Final answer
    x = 228.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.