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Finding the Fourth Proportional to 693.23, 957.85 and 554.49

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Solution

The fourth proportional to 693.23, 957.85 and 554.49 is: 766.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.23 : 957.85 = 554.49 : x
  2. Step 2: Convert to fraction form
    693.23/957.85 = 554.49/x
  3. Step 3: Cross multiply
    693.23x = 957.85 × 554.49
  4. Step 4: Simplify right side
    693.23x = 531,116.86
  5. Step 5: Solve for x
    x = 531,116.86/693.23
  6. Step 6: Final answer
    x = 766.15

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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.