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Finding the Fourth Proportional to 841.08, 1,260.87 and 353.88

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Solution

The fourth proportional to 841.08, 1,260.87 and 353.88 is: 530.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.08 : 1,260.87 = 353.88 : x
  2. Step 2: Convert to fraction form
    841.08/1,260.87 = 353.88/x
  3. Step 3: Cross multiply
    841.08x = 1,260.87 × 353.88
  4. Step 4: Simplify right side
    841.08x = 446,196.68
  5. Step 5: Solve for x
    x = 446,196.68/841.08
  6. Step 6: Final answer
    x = 530.50

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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.