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Finding the Fourth Proportional to 171.04, 235.88 and 152.80

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Solution

The fourth proportional to 171.04, 235.88 and 152.80 is: 210.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.04 : 235.88 = 152.80 : x
  2. Step 2: Convert to fraction form
    171.04/235.88 = 152.80/x
  3. Step 3: Cross multiply
    171.04x = 235.88 × 152.80
  4. Step 4: Simplify right side
    171.04x = 36,042.46
  5. Step 5: Solve for x
    x = 36,042.46/171.04
  6. Step 6: Final answer
    x = 210.73

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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.