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Finding the Fourth Proportional to 156.54, 233.52 and 140.34

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Solution

The fourth proportional to 156.54, 233.52 and 140.34 is: 209.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.54 : 233.52 = 140.34 : x
  2. Step 2: Convert to fraction form
    156.54/233.52 = 140.34/x
  3. Step 3: Cross multiply
    156.54x = 233.52 × 140.34
  4. Step 4: Simplify right side
    156.54x = 32,772.20
  5. Step 5: Solve for x
    x = 32,772.20/156.54
  6. Step 6: Final answer
    x = 209.35

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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.