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Finding the Fourth Proportional to 469.10, 702.26 and 347.90

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Solution

The fourth proportional to 469.10, 702.26 and 347.90 is: 520.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.10 : 702.26 = 347.90 : x
  2. Step 2: Convert to fraction form
    469.10/702.26 = 347.90/x
  3. Step 3: Cross multiply
    469.10x = 702.26 × 347.90
  4. Step 4: Simplify right side
    469.10x = 244,316.25
  5. Step 5: Solve for x
    x = 244,316.25/469.10
  6. Step 6: Final answer
    x = 520.82

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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.