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Finding the Fourth Proportional to 508.23, 761.10 and 345.42

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Solution

The fourth proportional to 508.23, 761.10 and 345.42 is: 517.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.23 : 761.10 = 345.42 : x
  2. Step 2: Convert to fraction form
    508.23/761.10 = 345.42/x
  3. Step 3: Cross multiply
    508.23x = 761.10 × 345.42
  4. Step 4: Simplify right side
    508.23x = 262,899.16
  5. Step 5: Solve for x
    x = 262,899.16/508.23
  6. Step 6: Final answer
    x = 517.28

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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.