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Finding the Fourth Proportional to 503.57, 753.45 and 349.79

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Solution

The fourth proportional to 503.57, 753.45 and 349.79 is: 523.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.57 : 753.45 = 349.79 : x
  2. Step 2: Convert to fraction form
    503.57/753.45 = 349.79/x
  3. Step 3: Cross multiply
    503.57x = 753.45 × 349.79
  4. Step 4: Simplify right side
    503.57x = 263,545.51
  5. Step 5: Solve for x
    x = 263,545.51/503.57
  6. Step 6: Final answer
    x = 523.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.