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Finding the Third Proportional to 313 and 530

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Solution

The third proportional to 313 and 530 is: 897.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    313 : 530 = 530 : x
  2. Step 2: Convert to fraction form
    313/530 = 530/x
  3. Step 3: Cross multiply
    313x = 530 × 530
  4. Step 4: Simplify right side
    313x = 280,900
  5. Step 5: Solve for x
    x = 280,900/313
  6. Step 6: Final answer
    x = 897.44

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Why These Related Problems?

These problems maintain the same ratio (1.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.