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Finding the Fourth Proportional to 956.99, 1,435.38 and 372.42

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Solution

The fourth proportional to 956.99, 1,435.38 and 372.42 is: 558.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.99 : 1,435.38 = 372.42 : x
  2. Step 2: Convert to fraction form
    956.99/1,435.38 = 372.42/x
  3. Step 3: Cross multiply
    956.99x = 1,435.38 × 372.42
  4. Step 4: Simplify right side
    956.99x = 534,564.22
  5. Step 5: Solve for x
    x = 534,564.22/956.99
  6. Step 6: Final answer
    x = 558.59

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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.