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Finding the Fourth Proportional to 156.11, 233.34 and 152.87

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Solution

The fourth proportional to 156.11, 233.34 and 152.87 is: 228.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.11 : 233.34 = 152.87 : x
  2. Step 2: Convert to fraction form
    156.11/233.34 = 152.87/x
  3. Step 3: Cross multiply
    156.11x = 233.34 × 152.87
  4. Step 4: Simplify right side
    156.11x = 35,668.95
  5. Step 5: Solve for x
    x = 35,668.95/156.11
  6. Step 6: Final answer
    x = 228.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.