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Finding the Fourth Proportional to 154.78, 232.00 and 52.02

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Solution

The fourth proportional to 154.78, 232.00 and 52.02 is: 77.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.78 : 232.00 = 52.02 : x
  2. Step 2: Convert to fraction form
    154.78/232.00 = 52.02/x
  3. Step 3: Cross multiply
    154.78x = 232.00 × 52.02
  4. Step 4: Simplify right side
    154.78x = 12,069.94
  5. Step 5: Solve for x
    x = 12,069.94/154.78
  6. Step 6: Final answer
    x = 77.98

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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.