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Finding the Fourth Proportional to 404.16, 558.20 and 322.16

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Solution

The fourth proportional to 404.16, 558.20 and 322.16 is: 444.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.16 : 558.20 = 322.16 : x
  2. Step 2: Convert to fraction form
    404.16/558.20 = 322.16/x
  3. Step 3: Cross multiply
    404.16x = 558.20 × 322.16
  4. Step 4: Simplify right side
    404.16x = 179,829.71
  5. Step 5: Solve for x
    x = 179,829.71/404.16
  6. Step 6: Final answer
    x = 444.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.