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Finding the Fourth Proportional to 612.40, 844.83 and 542.53

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Solution

The fourth proportional to 612.40, 844.83 and 542.53 is: 748.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.40 : 844.83 = 542.53 : x
  2. Step 2: Convert to fraction form
    612.40/844.83 = 542.53/x
  3. Step 3: Cross multiply
    612.40x = 844.83 × 542.53
  4. Step 4: Simplify right side
    612.40x = 458,345.62
  5. Step 5: Solve for x
    x = 458,345.62/612.40
  6. Step 6: Final answer
    x = 748.44

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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.