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Finding the Fourth Proportional to 543.95, 751.08 and 386.93

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Solution

The fourth proportional to 543.95, 751.08 and 386.93 is: 534.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.95 : 751.08 = 386.93 : x
  2. Step 2: Convert to fraction form
    543.95/751.08 = 386.93/x
  3. Step 3: Cross multiply
    543.95x = 751.08 × 386.93
  4. Step 4: Simplify right side
    543.95x = 290,615.38
  5. Step 5: Solve for x
    x = 290,615.38/543.95
  6. Step 6: Final answer
    x = 534.27

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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.