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Finding the Fourth Proportional to 536.95, 800.90 and 489.79

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Solution

The fourth proportional to 536.95, 800.90 and 489.79 is: 730.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.95 : 800.90 = 489.79 : x
  2. Step 2: Convert to fraction form
    536.95/800.90 = 489.79/x
  3. Step 3: Cross multiply
    536.95x = 800.90 × 489.79
  4. Step 4: Simplify right side
    536.95x = 392,272.81
  5. Step 5: Solve for x
    x = 392,272.81/536.95
  6. Step 6: Final answer
    x = 730.56

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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.