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Finding the Fourth Proportional to 554.73, 831.07 and 424.95

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Solution

The fourth proportional to 554.73, 831.07 and 424.95 is: 636.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.73 : 831.07 = 424.95 : x
  2. Step 2: Convert to fraction form
    554.73/831.07 = 424.95/x
  3. Step 3: Cross multiply
    554.73x = 831.07 × 424.95
  4. Step 4: Simplify right side
    554.73x = 353,163.20
  5. Step 5: Solve for x
    x = 353,163.20/554.73
  6. Step 6: Final answer
    x = 636.64

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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.