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Finding the Fourth Proportional to 156.67, 215.85 and 146.59

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Solution

The fourth proportional to 156.67, 215.85 and 146.59 is: 201.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.67 : 215.85 = 146.59 : x
  2. Step 2: Convert to fraction form
    156.67/215.85 = 146.59/x
  3. Step 3: Cross multiply
    156.67x = 215.85 × 146.59
  4. Step 4: Simplify right side
    156.67x = 31,641.45
  5. Step 5: Solve for x
    x = 31,641.45/156.67
  6. Step 6: Final answer
    x = 201.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.