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Finding the Fourth Proportional to 956.03, 1,317.05 and 898.61

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Solution

The fourth proportional to 956.03, 1,317.05 and 898.61 is: 1,237.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.03 : 1,317.05 = 898.61 : x
  2. Step 2: Convert to fraction form
    956.03/1,317.05 = 898.61/x
  3. Step 3: Cross multiply
    956.03x = 1,317.05 × 898.61
  4. Step 4: Simplify right side
    956.03x = 1,183,514.30
  5. Step 5: Solve for x
    x = 1,183,514.30/956.03
  6. Step 6: Final answer
    x = 1,237.95

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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.