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Finding the Fourth Proportional to 503.76, 695.89 and 479.46

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Solution

The fourth proportional to 503.76, 695.89 and 479.46 is: 662.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.76 : 695.89 = 479.46 : x
  2. Step 2: Convert to fraction form
    503.76/695.89 = 479.46/x
  3. Step 3: Cross multiply
    503.76x = 695.89 × 479.46
  4. Step 4: Simplify right side
    503.76x = 333,651.42
  5. Step 5: Solve for x
    x = 333,651.42/503.76
  6. Step 6: Final answer
    x = 662.32

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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.