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Finding the Fourth Proportional to 160.30, 239.18 and 156.61

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Solution

The fourth proportional to 160.30, 239.18 and 156.61 is: 233.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.30 : 239.18 = 156.61 : x
  2. Step 2: Convert to fraction form
    160.30/239.18 = 156.61/x
  3. Step 3: Cross multiply
    160.30x = 239.18 × 156.61
  4. Step 4: Simplify right side
    160.30x = 37,457.98
  5. Step 5: Solve for x
    x = 37,457.98/160.30
  6. Step 6: Final answer
    x = 233.67

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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.