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Finding the Fourth Proportional to 176.89, 265.55 and 99.90

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Solution

The fourth proportional to 176.89, 265.55 and 99.90 is: 149.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.89 : 265.55 = 99.90 : x
  2. Step 2: Convert to fraction form
    176.89/265.55 = 99.90/x
  3. Step 3: Cross multiply
    176.89x = 265.55 × 99.90
  4. Step 4: Simplify right side
    176.89x = 26,529.44
  5. Step 5: Solve for x
    x = 26,529.44/176.89
  6. Step 6: Final answer
    x = 149.98

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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.