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Finding the Fourth Proportional to 565.01, 779.02 and 387.62

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Solution

The fourth proportional to 565.01, 779.02 and 387.62 is: 534.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.01 : 779.02 = 387.62 : x
  2. Step 2: Convert to fraction form
    565.01/779.02 = 387.62/x
  3. Step 3: Cross multiply
    565.01x = 779.02 × 387.62
  4. Step 4: Simplify right side
    565.01x = 301,961.79
  5. Step 5: Solve for x
    x = 301,961.79/565.01
  6. Step 6: Final answer
    x = 534.44

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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.