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Finding the Fourth Proportional to 612.88, 846.13 and 403.42

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Solution

The fourth proportional to 612.88, 846.13 and 403.42 is: 556.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.88 : 846.13 = 403.42 : x
  2. Step 2: Convert to fraction form
    612.88/846.13 = 403.42/x
  3. Step 3: Cross multiply
    612.88x = 846.13 × 403.42
  4. Step 4: Simplify right side
    612.88x = 341,345.50
  5. Step 5: Solve for x
    x = 341,345.50/612.88
  6. Step 6: Final answer
    x = 556.95

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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.