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Finding the Fourth Proportional to 157.48, 235.05 and 141.24

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Solution

The fourth proportional to 157.48, 235.05 and 141.24 is: 210.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.48 : 235.05 = 141.24 : x
  2. Step 2: Convert to fraction form
    157.48/235.05 = 141.24/x
  3. Step 3: Cross multiply
    157.48x = 235.05 × 141.24
  4. Step 4: Simplify right side
    157.48x = 33,198.46
  5. Step 5: Solve for x
    x = 33,198.46/157.48
  6. Step 6: Final answer
    x = 210.81

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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.