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Finding the Fourth Proportional to 504.56, 696.12 and 307.92

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Solution

The fourth proportional to 504.56, 696.12 and 307.92 is: 424.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.56 : 696.12 = 307.92 : x
  2. Step 2: Convert to fraction form
    504.56/696.12 = 307.92/x
  3. Step 3: Cross multiply
    504.56x = 696.12 × 307.92
  4. Step 4: Simplify right side
    504.56x = 214,349.27
  5. Step 5: Solve for x
    x = 214,349.27/504.56
  6. Step 6: Final answer
    x = 424.82

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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.