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Finding the Fourth Proportional to 641.37, 956.58 and 544.51

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Solution

The fourth proportional to 641.37, 956.58 and 544.51 is: 812.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.37 : 956.58 = 544.51 : x
  2. Step 2: Convert to fraction form
    641.37/956.58 = 544.51/x
  3. Step 3: Cross multiply
    641.37x = 956.58 × 544.51
  4. Step 4: Simplify right side
    641.37x = 520,867.38
  5. Step 5: Solve for x
    x = 520,867.38/641.37
  6. Step 6: Final answer
    x = 812.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.