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Finding the Fourth Proportional to 403, 600.54 and 389.95

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Solution

The fourth proportional to 403, 600.54 and 389.95 is: 581.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    403 : 600.54 = 389.95 : x
  2. Step 2: Convert to fraction form
    403/600.54 = 389.95/x
  3. Step 3: Cross multiply
    403x = 600.54 × 389.95
  4. Step 4: Simplify right side
    403x = 234,180.57
  5. Step 5: Solve for x
    x = 234,180.57/403
  6. Step 6: Final answer
    x = 581.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.