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Finding the Fourth Proportional to 501.42, 746.39 and 490.62

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Solution

The fourth proportional to 501.42, 746.39 and 490.62 is: 730.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.42 : 746.39 = 490.62 : x
  2. Step 2: Convert to fraction form
    501.42/746.39 = 490.62/x
  3. Step 3: Cross multiply
    501.42x = 746.39 × 490.62
  4. Step 4: Simplify right side
    501.42x = 366,191.41
  5. Step 5: Solve for x
    x = 366,191.41/501.42
  6. Step 6: Final answer
    x = 730.31

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Double scale
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1.5x scale

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.