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Finding the Fourth Proportional to 934.34, 1,289.37 and 602.74

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Solution

The fourth proportional to 934.34, 1,289.37 and 602.74 is: 831.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.34 : 1,289.37 = 602.74 : x
  2. Step 2: Convert to fraction form
    934.34/1,289.37 = 602.74/x
  3. Step 3: Cross multiply
    934.34x = 1,289.37 × 602.74
  4. Step 4: Simplify right side
    934.34x = 777,155.36
  5. Step 5: Solve for x
    x = 777,155.36/934.34
  6. Step 6: Final answer
    x = 831.77

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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.