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Finding the Fourth Proportional to 761.41, 1,050.94 and 496.58

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Solution

The fourth proportional to 761.41, 1,050.94 and 496.58 is: 685.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    761.41 : 1,050.94 = 496.58 : x
  2. Step 2: Convert to fraction form
    761.41/1,050.94 = 496.58/x
  3. Step 3: Cross multiply
    761.41x = 1,050.94 × 496.58
  4. Step 4: Simplify right side
    761.41x = 521,875.79
  5. Step 5: Solve for x
    x = 521,875.79/761.41
  6. Step 6: Final answer
    x = 685.41

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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.