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Finding the Fourth Proportional to 504.18, 696.36 and 403.59

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Solution

The fourth proportional to 504.18, 696.36 and 403.59 is: 557.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.18 : 696.36 = 403.59 : x
  2. Step 2: Convert to fraction form
    504.18/696.36 = 403.59/x
  3. Step 3: Cross multiply
    504.18x = 696.36 × 403.59
  4. Step 4: Simplify right side
    504.18x = 281,038.43
  5. Step 5: Solve for x
    x = 281,038.43/504.18
  6. Step 6: Final answer
    x = 557.42

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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.