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Finding the Fourth Proportional to 401.70, 602.31 and 193.37

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Solution

The fourth proportional to 401.70, 602.31 and 193.37 is: 289.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.70 : 602.31 = 193.37 : x
  2. Step 2: Convert to fraction form
    401.70/602.31 = 193.37/x
  3. Step 3: Cross multiply
    401.70x = 602.31 × 193.37
  4. Step 4: Simplify right side
    401.70x = 116,465.67
  5. Step 5: Solve for x
    x = 116,465.67/401.70
  6. Step 6: Final answer
    x = 289.93

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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.