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Finding the Fourth Proportional to 503.16, 693.92 and 345.82

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Solution

The fourth proportional to 503.16, 693.92 and 345.82 is: 476.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.16 : 693.92 = 345.82 : x
  2. Step 2: Convert to fraction form
    503.16/693.92 = 345.82/x
  3. Step 3: Cross multiply
    503.16x = 693.92 × 345.82
  4. Step 4: Simplify right side
    503.16x = 239,969.90
  5. Step 5: Solve for x
    x = 239,969.90/503.16
  6. Step 6: Final answer
    x = 476.92

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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.