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Finding the Fourth Proportional to 841.88, 1,263.06 and 354.96

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Solution

The fourth proportional to 841.88, 1,263.06 and 354.96 is: 532.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.88 : 1,263.06 = 354.96 : x
  2. Step 2: Convert to fraction form
    841.88/1,263.06 = 354.96/x
  3. Step 3: Cross multiply
    841.88x = 1,263.06 × 354.96
  4. Step 4: Simplify right side
    841.88x = 448,335.78
  5. Step 5: Solve for x
    x = 448,335.78/841.88
  6. Step 6: Final answer
    x = 532.54

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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.