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Finding the Fourth Proportional to 490.40, 730.88 and 473.76

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Solution

The fourth proportional to 490.40, 730.88 and 473.76 is: 706.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.40 : 730.88 = 473.76 : x
  2. Step 2: Convert to fraction form
    490.40/730.88 = 473.76/x
  3. Step 3: Cross multiply
    490.40x = 730.88 × 473.76
  4. Step 4: Simplify right side
    490.40x = 346,261.71
  5. Step 5: Solve for x
    x = 346,261.71/490.40
  6. Step 6: Final answer
    x = 706.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.