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Finding the Fourth Proportional to 403.50, 557.15 and 293.24

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Solution

The fourth proportional to 403.50, 557.15 and 293.24 is: 404.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.50 : 557.15 = 293.24 : x
  2. Step 2: Convert to fraction form
    403.50/557.15 = 293.24/x
  3. Step 3: Cross multiply
    403.50x = 557.15 × 293.24
  4. Step 4: Simplify right side
    403.50x = 163,378.59
  5. Step 5: Solve for x
    x = 163,378.59/403.50
  6. Step 6: Final answer
    x = 404.90

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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.