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Finding the Fourth Proportional to 690.80, 954.52 and 544.60

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Solution

The fourth proportional to 690.80, 954.52 and 544.60 is: 752.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.80 : 954.52 = 544.60 : x
  2. Step 2: Convert to fraction form
    690.80/954.52 = 544.60/x
  3. Step 3: Cross multiply
    690.80x = 954.52 × 544.60
  4. Step 4: Simplify right side
    690.80x = 519,831.59
  5. Step 5: Solve for x
    x = 519,831.59/690.80
  6. Step 6: Final answer
    x = 752.51

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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.