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Finding the Fourth Proportional to 511.55, 714.55 and 511.55

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Solution

The fourth proportional to 511.55, 714.55 and 511.55 is: 714.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.55 : 714.55 = 511.55 : x
  2. Step 2: Convert to fraction form
    511.55/714.55 = 511.55/x
  3. Step 3: Cross multiply
    511.55x = 714.55 × 511.55
  4. Step 4: Simplify right side
    511.55x = 365,528.05
  5. Step 5: Solve for x
    x = 365,528.05/511.55
  6. Step 6: Final answer
    x = 714.55

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.