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Finding the Fourth Proportional to 761.95, 1,050.45 and 482.05

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Solution

The fourth proportional to 761.95, 1,050.45 and 482.05 is: 664.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    761.95 : 1,050.45 = 482.05 : x
  2. Step 2: Convert to fraction form
    761.95/1,050.45 = 482.05/x
  3. Step 3: Cross multiply
    761.95x = 1,050.45 × 482.05
  4. Step 4: Simplify right side
    761.95x = 506,365.73
  5. Step 5: Solve for x
    x = 506,365.73/761.95
  6. Step 6: Final answer
    x = 664.56

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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.