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Finding the Fourth Proportional to 934.68, 1,289.42 and 603

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Solution

The fourth proportional to 934.68, 1,289.42 and 603 is: 831.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.68 : 1,289.42 = 603 : x
  2. Step 2: Convert to fraction form
    934.68/1,289.42 = 603/x
  3. Step 3: Cross multiply
    934.68x = 1,289.42 × 603
  4. Step 4: Simplify right side
    934.68x = 777,520.26
  5. Step 5: Solve for x
    x = 777,520.26/934.68
  6. Step 6: Final answer
    x = 831.86

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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.