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Finding the Fourth Proportional to 690.77, 951.33 and 573.25

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Solution

The fourth proportional to 690.77, 951.33 and 573.25 is: 789.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.77 : 951.33 = 573.25 : x
  2. Step 2: Convert to fraction form
    690.77/951.33 = 573.25/x
  3. Step 3: Cross multiply
    690.77x = 951.33 × 573.25
  4. Step 4: Simplify right side
    690.77x = 545,349.92
  5. Step 5: Solve for x
    x = 545,349.92/690.77
  6. Step 6: Final answer
    x = 789.48

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1.5x scale

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.