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Finding the Fourth Proportional to 156.73, 235.12 and 53.99

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Solution

The fourth proportional to 156.73, 235.12 and 53.99 is: 81.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.73 : 235.12 = 53.99 : x
  2. Step 2: Convert to fraction form
    156.73/235.12 = 53.99/x
  3. Step 3: Cross multiply
    156.73x = 235.12 × 53.99
  4. Step 4: Simplify right side
    156.73x = 12,694.89
  5. Step 5: Solve for x
    x = 12,694.89/156.73
  6. Step 6: Final answer
    x = 81.00

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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.