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Finding the Fourth Proportional to 774.59, 1,158.32 and 577.29

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Solution

The fourth proportional to 774.59, 1,158.32 and 577.29 is: 863.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    774.59 : 1,158.32 = 577.29 : x
  2. Step 2: Convert to fraction form
    774.59/1,158.32 = 577.29/x
  3. Step 3: Cross multiply
    774.59x = 1,158.32 × 577.29
  4. Step 4: Simplify right side
    774.59x = 668,677.87
  5. Step 5: Solve for x
    x = 668,677.87/774.59
  6. Step 6: Final answer
    x = 863.27

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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.