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Finding the Fourth Proportional to 761.34, 1,050.54 and 551.82

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Solution

The fourth proportional to 761.34, 1,050.54 and 551.82 is: 761.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    761.34 : 1,050.54 = 551.82 : x
  2. Step 2: Convert to fraction form
    761.34/1,050.54 = 551.82/x
  3. Step 3: Cross multiply
    761.34x = 1,050.54 × 551.82
  4. Step 4: Simplify right side
    761.34x = 579,708.98
  5. Step 5: Solve for x
    x = 579,708.98/761.34
  6. Step 6: Final answer
    x = 761.43

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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.