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Finding the Fourth Proportional to 612.62, 844.73 and 402.53

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Solution

The fourth proportional to 612.62, 844.73 and 402.53 is: 555.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.62 : 844.73 = 402.53 : x
  2. Step 2: Convert to fraction form
    612.62/844.73 = 402.53/x
  3. Step 3: Cross multiply
    612.62x = 844.73 × 402.53
  4. Step 4: Simplify right side
    612.62x = 340,025.95
  5. Step 5: Solve for x
    x = 340,025.95/612.62
  6. Step 6: Final answer
    x = 555.04

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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.