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Finding the Fourth Proportional to 962.18, 1,442.16 and 551.52

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Solution

The fourth proportional to 962.18, 1,442.16 and 551.52 is: 826.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.18 : 1,442.16 = 551.52 : x
  2. Step 2: Convert to fraction form
    962.18/1,442.16 = 551.52/x
  3. Step 3: Cross multiply
    962.18x = 1,442.16 × 551.52
  4. Step 4: Simplify right side
    962.18x = 795,380.08
  5. Step 5: Solve for x
    x = 795,380.08/962.18
  6. Step 6: Final answer
    x = 826.64

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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.