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Finding the Fourth Proportional to 761.59, 1,141.81 and 371.64

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Solution

The fourth proportional to 761.59, 1,141.81 and 371.64 is: 557.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    761.59 : 1,141.81 = 371.64 : x
  2. Step 2: Convert to fraction form
    761.59/1,141.81 = 371.64/x
  3. Step 3: Cross multiply
    761.59x = 1,141.81 × 371.64
  4. Step 4: Simplify right side
    761.59x = 424,342.27
  5. Step 5: Solve for x
    x = 424,342.27/761.59
  6. Step 6: Final answer
    x = 557.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.