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Finding the Fourth Proportional to 153.43, 228.95 and 149.77

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Solution

The fourth proportional to 153.43, 228.95 and 149.77 is: 223.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.43 : 228.95 = 149.77 : x
  2. Step 2: Convert to fraction form
    153.43/228.95 = 149.77/x
  3. Step 3: Cross multiply
    153.43x = 228.95 × 149.77
  4. Step 4: Simplify right side
    153.43x = 34,289.84
  5. Step 5: Solve for x
    x = 34,289.84/153.43
  6. Step 6: Final answer
    x = 223.49

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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.