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Finding the Fourth Proportional to 569.76, 854.56 and 423.69

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Solution

The fourth proportional to 569.76, 854.56 and 423.69 is: 635.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.76 : 854.56 = 423.69 : x
  2. Step 2: Convert to fraction form
    569.76/854.56 = 423.69/x
  3. Step 3: Cross multiply
    569.76x = 854.56 × 423.69
  4. Step 4: Simplify right side
    569.76x = 362,068.53
  5. Step 5: Solve for x
    x = 362,068.53/569.76
  6. Step 6: Final answer
    x = 635.48

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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.