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Finding the Fourth Proportional to 403.68, 606.36 and 358.98

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Solution

The fourth proportional to 403.68, 606.36 and 358.98 is: 539.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.68 : 606.36 = 358.98 : x
  2. Step 2: Convert to fraction form
    403.68/606.36 = 358.98/x
  3. Step 3: Cross multiply
    403.68x = 606.36 × 358.98
  4. Step 4: Simplify right side
    403.68x = 217,671.11
  5. Step 5: Solve for x
    x = 217,671.11/403.68
  6. Step 6: Final answer
    x = 539.22

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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.