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Finding the Fourth Proportional to 772.72, 1,158.76 and 529.32

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Solution

The fourth proportional to 772.72, 1,158.76 and 529.32 is: 793.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    772.72 : 1,158.76 = 529.32 : x
  2. Step 2: Convert to fraction form
    772.72/1,158.76 = 529.32/x
  3. Step 3: Cross multiply
    772.72x = 1,158.76 × 529.32
  4. Step 4: Simplify right side
    772.72x = 613,354.84
  5. Step 5: Solve for x
    x = 613,354.84/772.72
  6. Step 6: Final answer
    x = 793.76

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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.