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Finding the Fourth Proportional to 488.38, 735.91 and 403.60

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Solution

The fourth proportional to 488.38, 735.91 and 403.60 is: 608.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.38 : 735.91 = 403.60 : x
  2. Step 2: Convert to fraction form
    488.38/735.91 = 403.60/x
  3. Step 3: Cross multiply
    488.38x = 735.91 × 403.60
  4. Step 4: Simplify right side
    488.38x = 297,013.28
  5. Step 5: Solve for x
    x = 297,013.28/488.38
  6. Step 6: Final answer
    x = 608.16

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.