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Finding the Fourth Proportional to 648.47, 893.22 and 603.77

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Solution

The fourth proportional to 648.47, 893.22 and 603.77 is: 831.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.47 : 893.22 = 603.77 : x
  2. Step 2: Convert to fraction form
    648.47/893.22 = 603.77/x
  3. Step 3: Cross multiply
    648.47x = 893.22 × 603.77
  4. Step 4: Simplify right side
    648.47x = 539,294.97
  5. Step 5: Solve for x
    x = 539,294.97/648.47
  6. Step 6: Final answer
    x = 831.65

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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.