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Finding the Fourth Proportional to 507.39, 760.60 and 345.12

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Solution

The fourth proportional to 507.39, 760.60 and 345.12 is: 517.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.39 : 760.60 = 345.12 : x
  2. Step 2: Convert to fraction form
    507.39/760.60 = 345.12/x
  3. Step 3: Cross multiply
    507.39x = 760.60 × 345.12
  4. Step 4: Simplify right side
    507.39x = 262,498.27
  5. Step 5: Solve for x
    x = 262,498.27/507.39
  6. Step 6: Final answer
    x = 517.35

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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.