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Finding the Fourth Proportional to 841.45, 1,161.21 and 468.52

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Solution

The fourth proportional to 841.45, 1,161.21 and 468.52 is: 646.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.45 : 1,161.21 = 468.52 : x
  2. Step 2: Convert to fraction form
    841.45/1,161.21 = 468.52/x
  3. Step 3: Cross multiply
    841.45x = 1,161.21 × 468.52
  4. Step 4: Simplify right side
    841.45x = 544,050.11
  5. Step 5: Solve for x
    x = 544,050.11/841.45
  6. Step 6: Final answer
    x = 646.56

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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.