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Finding the Fourth Proportional to 693.18, 955.62 and 483.03

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Solution

The fourth proportional to 693.18, 955.62 and 483.03 is: 665.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.18 : 955.62 = 483.03 : x
  2. Step 2: Convert to fraction form
    693.18/955.62 = 483.03/x
  3. Step 3: Cross multiply
    693.18x = 955.62 × 483.03
  4. Step 4: Simplify right side
    693.18x = 461,593.13
  5. Step 5: Solve for x
    x = 461,593.13/693.18
  6. Step 6: Final answer
    x = 665.91

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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.