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Finding the Fourth Proportional to 156.91, 235.18 and 60.67

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Solution

The fourth proportional to 156.91, 235.18 and 60.67 is: 90.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.91 : 235.18 = 60.67 : x
  2. Step 2: Convert to fraction form
    156.91/235.18 = 60.67/x
  3. Step 3: Cross multiply
    156.91x = 235.18 × 60.67
  4. Step 4: Simplify right side
    156.91x = 14,268.37
  5. Step 5: Solve for x
    x = 14,268.37/156.91
  6. Step 6: Final answer
    x = 90.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.