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Finding the Fourth Proportional to 841.87, 1,161.65 and 468.86

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Solution

The fourth proportional to 841.87, 1,161.65 and 468.86 is: 646.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.87 : 1,161.65 = 468.86 : x
  2. Step 2: Convert to fraction form
    841.87/1,161.65 = 468.86/x
  3. Step 3: Cross multiply
    841.87x = 1,161.65 × 468.86
  4. Step 4: Simplify right side
    841.87x = 544,655.30
  5. Step 5: Solve for x
    x = 544,655.30/841.87
  6. Step 6: Final answer
    x = 646.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.