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Finding the Fourth Proportional to 958.36, 1,437.54 and 787

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Solution

The fourth proportional to 958.36, 1,437.54 and 787 is: 1,180.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.36 : 1,437.54 = 787 : x
  2. Step 2: Convert to fraction form
    958.36/1,437.54 = 787/x
  3. Step 3: Cross multiply
    958.36x = 1,437.54 × 787
  4. Step 4: Simplify right side
    958.36x = 1,131,343.98
  5. Step 5: Solve for x
    x = 1,131,343.98/958.36
  6. Step 6: Final answer
    x = 1,180.50

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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.