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Finding the Fourth Proportional to 841.84, 1,262.25 and 347.86

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Solution

The fourth proportional to 841.84, 1,262.25 and 347.86 is: 521.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.84 : 1,262.25 = 347.86 : x
  2. Step 2: Convert to fraction form
    841.84/1,262.25 = 347.86/x
  3. Step 3: Cross multiply
    841.84x = 1,262.25 × 347.86
  4. Step 4: Simplify right side
    841.84x = 439,087.86
  5. Step 5: Solve for x
    x = 439,087.86/841.84
  6. Step 6: Final answer
    x = 521.58

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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.