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Finding the Fourth Proportional to 152.83, 229.25 and 91.90

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Solution

The fourth proportional to 152.83, 229.25 and 91.90 is: 137.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.83 : 229.25 = 91.90 : x
  2. Step 2: Convert to fraction form
    152.83/229.25 = 91.90/x
  3. Step 3: Cross multiply
    152.83x = 229.25 × 91.90
  4. Step 4: Simplify right side
    152.83x = 21,068.08
  5. Step 5: Solve for x
    x = 21,068.08/152.83
  6. Step 6: Final answer
    x = 137.85

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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.