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Finding the Fourth Proportional to 569.96, 854.80 and 261.72

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Solution

The fourth proportional to 569.96, 854.80 and 261.72 is: 392.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.96 : 854.80 = 261.72 : x
  2. Step 2: Convert to fraction form
    569.96/854.80 = 261.72/x
  3. Step 3: Cross multiply
    569.96x = 854.80 × 261.72
  4. Step 4: Simplify right side
    569.96x = 223,718.26
  5. Step 5: Solve for x
    x = 223,718.26/569.96
  6. Step 6: Final answer
    x = 392.52

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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.