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Finding the Fourth Proportional to 156.30, 235.56 and 148.98

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Solution

The fourth proportional to 156.30, 235.56 and 148.98 is: 224.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.30 : 235.56 = 148.98 : x
  2. Step 2: Convert to fraction form
    156.30/235.56 = 148.98/x
  3. Step 3: Cross multiply
    156.30x = 235.56 × 148.98
  4. Step 4: Simplify right side
    156.30x = 35,093.73
  5. Step 5: Solve for x
    x = 35,093.73/156.30
  6. Step 6: Final answer
    x = 224.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.