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Finding the Fourth Proportional to 152.85, 211.48 and 133.48

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Solution

The fourth proportional to 152.85, 211.48 and 133.48 is: 184.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.85 : 211.48 = 133.48 : x
  2. Step 2: Convert to fraction form
    152.85/211.48 = 133.48/x
  3. Step 3: Cross multiply
    152.85x = 211.48 × 133.48
  4. Step 4: Simplify right side
    152.85x = 28,228.28
  5. Step 5: Solve for x
    x = 28,228.28/152.85
  6. Step 6: Final answer
    x = 184.68

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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.