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Finding the Fourth Proportional to 760.97, 1,050.40 and 481.67

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Solution

The fourth proportional to 760.97, 1,050.40 and 481.67 is: 664.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.97 : 1,050.40 = 481.67 : x
  2. Step 2: Convert to fraction form
    760.97/1,050.40 = 481.67/x
  3. Step 3: Cross multiply
    760.97x = 1,050.40 × 481.67
  4. Step 4: Simplify right side
    760.97x = 505,946.17
  5. Step 5: Solve for x
    x = 505,946.17/760.97
  6. Step 6: Final answer
    x = 664.87

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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.