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Finding the Fourth Proportional to 760.62, 1,049.64 and 481.02

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Solution

The fourth proportional to 760.62, 1,049.64 and 481.02 is: 663.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.62 : 1,049.64 = 481.02 : x
  2. Step 2: Convert to fraction form
    760.62/1,049.64 = 481.02/x
  3. Step 3: Cross multiply
    760.62x = 1,049.64 × 481.02
  4. Step 4: Simplify right side
    760.62x = 504,897.83
  5. Step 5: Solve for x
    x = 504,897.83/760.62
  6. Step 6: Final answer
    x = 663.80

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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.