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Finding the Fourth Proportional to 160.74, 239.45 and 160.02

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Solution

The fourth proportional to 160.74, 239.45 and 160.02 is: 238.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.74 : 239.45 = 160.02 : x
  2. Step 2: Convert to fraction form
    160.74/239.45 = 160.02/x
  3. Step 3: Cross multiply
    160.74x = 239.45 × 160.02
  4. Step 4: Simplify right side
    160.74x = 38,315.99
  5. Step 5: Solve for x
    x = 38,315.99/160.74
  6. Step 6: Final answer
    x = 238.37

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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.