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Finding the Fourth Proportional to 887.96, 1,332.63 and 579.06

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Solution

The fourth proportional to 887.96, 1,332.63 and 579.06 is: 869.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.96 : 1,332.63 = 579.06 : x
  2. Step 2: Convert to fraction form
    887.96/1,332.63 = 579.06/x
  3. Step 3: Cross multiply
    887.96x = 1,332.63 × 579.06
  4. Step 4: Simplify right side
    887.96x = 771,672.73
  5. Step 5: Solve for x
    x = 771,672.73/887.96
  6. Step 6: Final answer
    x = 869.04

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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.