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Finding the Fourth Proportional to 401.68, 603.36 and 356.98

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Solution

The fourth proportional to 401.68, 603.36 and 356.98 is: 536.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.68 : 603.36 = 356.98 : x
  2. Step 2: Convert to fraction form
    401.68/603.36 = 356.98/x
  3. Step 3: Cross multiply
    401.68x = 603.36 × 356.98
  4. Step 4: Simplify right side
    401.68x = 215,387.45
  5. Step 5: Solve for x
    x = 215,387.45/401.68
  6. Step 6: Final answer
    x = 536.22

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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.