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Finding the Fourth Proportional to 901.35, 1,351.15 and 490.55

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Solution

The fourth proportional to 901.35, 1,351.15 and 490.55 is: 735.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.35 : 1,351.15 = 490.55 : x
  2. Step 2: Convert to fraction form
    901.35/1,351.15 = 490.55/x
  3. Step 3: Cross multiply
    901.35x = 1,351.15 × 490.55
  4. Step 4: Simplify right side
    901.35x = 662,798.65
  5. Step 5: Solve for x
    x = 662,798.65/901.35
  6. Step 6: Final answer
    x = 735.34

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Double scale
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1.5x scale

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.