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Finding the Fourth Proportional to 469.34, 702.99 and 263.80

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Solution

The fourth proportional to 469.34, 702.99 and 263.80 is: 395.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.34 : 702.99 = 263.80 : x
  2. Step 2: Convert to fraction form
    469.34/702.99 = 263.80/x
  3. Step 3: Cross multiply
    469.34x = 702.99 × 263.80
  4. Step 4: Simplify right side
    469.34x = 185,446.92
  5. Step 5: Solve for x
    x = 185,446.92/469.34
  6. Step 6: Final answer
    x = 395.12

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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.