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Finding the Fourth Proportional to 934.72, 1,288.54 and 603.02

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Solution

The fourth proportional to 934.72, 1,288.54 and 603.02 is: 831.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.72 : 1,288.54 = 603.02 : x
  2. Step 2: Convert to fraction form
    934.72/1,288.54 = 603.02/x
  3. Step 3: Cross multiply
    934.72x = 1,288.54 × 603.02
  4. Step 4: Simplify right side
    934.72x = 777,015.39
  5. Step 5: Solve for x
    x = 777,015.39/934.72
  6. Step 6: Final answer
    x = 831.28

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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.