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Finding the Fourth Proportional to 569.66, 855.13 and 322.86

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Solution

The fourth proportional to 569.66, 855.13 and 322.86 is: 484.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.66 : 855.13 = 322.86 : x
  2. Step 2: Convert to fraction form
    569.66/855.13 = 322.86/x
  3. Step 3: Cross multiply
    569.66x = 855.13 × 322.86
  4. Step 4: Simplify right side
    569.66x = 276,088.78
  5. Step 5: Solve for x
    x = 276,088.78/569.66
  6. Step 6: Final answer
    x = 484.66

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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.