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Finding the Fourth Proportional to 504.90, 696.41 and 411.64

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Solution

The fourth proportional to 504.90, 696.41 and 411.64 is: 567.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.90 : 696.41 = 411.64 : x
  2. Step 2: Convert to fraction form
    504.90/696.41 = 411.64/x
  3. Step 3: Cross multiply
    504.90x = 696.41 × 411.64
  4. Step 4: Simplify right side
    504.90x = 286,670.21
  5. Step 5: Solve for x
    x = 286,670.21/504.90
  6. Step 6: Final answer
    x = 567.78

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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.