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Finding the Fourth Proportional to 572.63, 858.50 and 511.79

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Solution

The fourth proportional to 572.63, 858.50 and 511.79 is: 767.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.63 : 858.50 = 511.79 : x
  2. Step 2: Convert to fraction form
    572.63/858.50 = 511.79/x
  3. Step 3: Cross multiply
    572.63x = 858.50 × 511.79
  4. Step 4: Simplify right side
    572.63x = 439,369.16
  5. Step 5: Solve for x
    x = 439,369.16/572.63
  6. Step 6: Final answer
    x = 767.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.