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Finding the Fourth Proportional to 401.65, 602.47 and 245.82

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Solution

The fourth proportional to 401.65, 602.47 and 245.82 is: 368.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.65 : 602.47 = 245.82 : x
  2. Step 2: Convert to fraction form
    401.65/602.47 = 245.82/x
  3. Step 3: Cross multiply
    401.65x = 602.47 × 245.82
  4. Step 4: Simplify right side
    401.65x = 148,099.18
  5. Step 5: Solve for x
    x = 148,099.18/401.65
  6. Step 6: Final answer
    x = 368.73

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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.