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Finding the Fourth Proportional to 156.63, 216.08 and 94.46

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Solution

The fourth proportional to 156.63, 216.08 and 94.46 is: 130.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.63 : 216.08 = 94.46 : x
  2. Step 2: Convert to fraction form
    156.63/216.08 = 94.46/x
  3. Step 3: Cross multiply
    156.63x = 216.08 × 94.46
  4. Step 4: Simplify right side
    156.63x = 20,409.36
  5. Step 5: Solve for x
    x = 20,409.36/156.63
  6. Step 6: Final answer
    x = 130.30

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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.