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Finding the Fourth Proportional to 900.98, 1,351.10 and 353.10

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Solution

The fourth proportional to 900.98, 1,351.10 and 353.10 is: 529.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.98 : 1,351.10 = 353.10 : x
  2. Step 2: Convert to fraction form
    900.98/1,351.10 = 353.10/x
  3. Step 3: Cross multiply
    900.98x = 1,351.10 × 353.10
  4. Step 4: Simplify right side
    900.98x = 477,073.41
  5. Step 5: Solve for x
    x = 477,073.41/900.98
  6. Step 6: Final answer
    x = 529.50

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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.