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Finding the Fourth Proportional to 653.72, 983.03 and 551.66

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Solution

The fourth proportional to 653.72, 983.03 and 551.66 is: 829.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.72 : 983.03 = 551.66 : x
  2. Step 2: Convert to fraction form
    653.72/983.03 = 551.66/x
  3. Step 3: Cross multiply
    653.72x = 983.03 × 551.66
  4. Step 4: Simplify right side
    653.72x = 542,290.66
  5. Step 5: Solve for x
    x = 542,290.66/653.72
  6. Step 6: Final answer
    x = 829.55

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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.