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Finding the Fourth Proportional to 503.12, 755.04 and 349.40

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Solution

The fourth proportional to 503.12, 755.04 and 349.40 is: 524.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.12 : 755.04 = 349.40 : x
  2. Step 2: Convert to fraction form
    503.12/755.04 = 349.40/x
  3. Step 3: Cross multiply
    503.12x = 755.04 × 349.40
  4. Step 4: Simplify right side
    503.12x = 263,810.98
  5. Step 5: Solve for x
    x = 263,810.98/503.12
  6. Step 6: Final answer
    x = 524.35

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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.