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Finding the Fourth Proportional to 956.89, 1,437.51 and 679.92

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Solution

The fourth proportional to 956.89, 1,437.51 and 679.92 is: 1,021.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.89 : 1,437.51 = 679.92 : x
  2. Step 2: Convert to fraction form
    956.89/1,437.51 = 679.92/x
  3. Step 3: Cross multiply
    956.89x = 1,437.51 × 679.92
  4. Step 4: Simplify right side
    956.89x = 977,390.13
  5. Step 5: Solve for x
    x = 977,390.13/956.89
  6. Step 6: Final answer
    x = 1,021.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.