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Finding the Fourth Proportional to 506.99, 700.23 and 397.77

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Solution

The fourth proportional to 506.99, 700.23 and 397.77 is: 549.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.99 : 700.23 = 397.77 : x
  2. Step 2: Convert to fraction form
    506.99/700.23 = 397.77/x
  3. Step 3: Cross multiply
    506.99x = 700.23 × 397.77
  4. Step 4: Simplify right side
    506.99x = 278,530.49
  5. Step 5: Solve for x
    x = 278,530.49/506.99
  6. Step 6: Final answer
    x = 549.39

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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.