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Finding the Fourth Proportional to 135.71, 203.43 and 58.64

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Solution

The fourth proportional to 135.71, 203.43 and 58.64 is: 87.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.71 : 203.43 = 58.64 : x
  2. Step 2: Convert to fraction form
    135.71/203.43 = 58.64/x
  3. Step 3: Cross multiply
    135.71x = 203.43 × 58.64
  4. Step 4: Simplify right side
    135.71x = 11,929.14
  5. Step 5: Solve for x
    x = 11,929.14/135.71
  6. Step 6: Final answer
    x = 87.90

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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.