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Finding the Fourth Proportional to 159.09, 238.58 and 61.58

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Solution

The fourth proportional to 159.09, 238.58 and 61.58 is: 92.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.09 : 238.58 = 61.58 : x
  2. Step 2: Convert to fraction form
    159.09/238.58 = 61.58/x
  3. Step 3: Cross multiply
    159.09x = 238.58 × 61.58
  4. Step 4: Simplify right side
    159.09x = 14,692.11
  5. Step 5: Solve for x
    x = 14,692.11/159.09
  6. Step 6: Final answer
    x = 92.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.