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Finding the Fourth Proportional to 841.48, 1,161.18 and 468.45

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Solution

The fourth proportional to 841.48, 1,161.18 and 468.45 is: 646.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.48 : 1,161.18 = 468.45 : x
  2. Step 2: Convert to fraction form
    841.48/1,161.18 = 468.45/x
  3. Step 3: Cross multiply
    841.48x = 1,161.18 × 468.45
  4. Step 4: Simplify right side
    841.48x = 543,954.77
  5. Step 5: Solve for x
    x = 543,954.77/841.48
  6. Step 6: Final answer
    x = 646.43

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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.