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Finding the Third Proportional to 358.75 and 507.88

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Solution

The third proportional to 358.75 and 507.88 is: 718.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.75 : 507.88 = 507.88 : x
  2. Step 2: Convert to fraction form
    358.75/507.88 = 507.88/x
  3. Step 3: Cross multiply
    358.75x = 507.88 × 507.88
  4. Step 4: Simplify right side
    358.75x = 257,937.02
  5. Step 5: Solve for x
    x = 257,937.02/358.75
  6. Step 6: Final answer
    x = 718.99

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.