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Finding the Fourth Proportional to 158.39, 235.79 and 156.63

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Solution

The fourth proportional to 158.39, 235.79 and 156.63 is: 233.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.39 : 235.79 = 156.63 : x
  2. Step 2: Convert to fraction form
    158.39/235.79 = 156.63/x
  3. Step 3: Cross multiply
    158.39x = 235.79 × 156.63
  4. Step 4: Simplify right side
    158.39x = 36,933.36
  5. Step 5: Solve for x
    x = 36,933.36/158.39
  6. Step 6: Final answer
    x = 233.18

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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.