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Finding the Fourth Proportional to 156.37, 215.53 and 134.08

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Solution

The fourth proportional to 156.37, 215.53 and 134.08 is: 184.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.37 : 215.53 = 134.08 : x
  2. Step 2: Convert to fraction form
    156.37/215.53 = 134.08/x
  3. Step 3: Cross multiply
    156.37x = 215.53 × 134.08
  4. Step 4: Simplify right side
    156.37x = 28,898.26
  5. Step 5: Solve for x
    x = 28,898.26/156.37
  6. Step 6: Final answer
    x = 184.81

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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.