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Finding the Fourth Proportional to 543.81, 751.08 and 368.85

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Solution

The fourth proportional to 543.81, 751.08 and 368.85 is: 509.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.81 : 751.08 = 368.85 : x
  2. Step 2: Convert to fraction form
    543.81/751.08 = 368.85/x
  3. Step 3: Cross multiply
    543.81x = 751.08 × 368.85
  4. Step 4: Simplify right side
    543.81x = 277,035.86
  5. Step 5: Solve for x
    x = 277,035.86/543.81
  6. Step 6: Final answer
    x = 509.44

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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.