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Finding the Fourth Proportional to 158.59, 236.40 and 141.15

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Solution

The fourth proportional to 158.59, 236.40 and 141.15 is: 210.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.59 : 236.40 = 141.15 : x
  2. Step 2: Convert to fraction form
    158.59/236.40 = 141.15/x
  3. Step 3: Cross multiply
    158.59x = 236.40 × 141.15
  4. Step 4: Simplify right side
    158.59x = 33,366.89
  5. Step 5: Solve for x
    x = 33,366.89/158.59
  6. Step 6: Final answer
    x = 210.40

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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.