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Finding the Fourth Proportional to 612.01, 922.60 and 571.28

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Solution

The fourth proportional to 612.01, 922.60 and 571.28 is: 861.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.01 : 922.60 = 571.28 : x
  2. Step 2: Convert to fraction form
    612.01/922.60 = 571.28/x
  3. Step 3: Cross multiply
    612.01x = 922.60 × 571.28
  4. Step 4: Simplify right side
    612.01x = 527,057.42
  5. Step 5: Solve for x
    x = 527,057.42/612.01
  6. Step 6: Final answer
    x = 861.19

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.