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Finding the Fourth Proportional to 490.30, 735.21 and 284.93

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Solution

The fourth proportional to 490.30, 735.21 and 284.93 is: 427.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.30 : 735.21 = 284.93 : x
  2. Step 2: Convert to fraction form
    490.30/735.21 = 284.93/x
  3. Step 3: Cross multiply
    490.30x = 735.21 × 284.93
  4. Step 4: Simplify right side
    490.30x = 209,482.26
  5. Step 5: Solve for x
    x = 209,482.26/490.30
  6. Step 6: Final answer
    x = 427.25

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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.