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Finding the Fourth Proportional to 697.57, 962.49 and 402.67

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Solution

The fourth proportional to 697.57, 962.49 and 402.67 is: 555.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.57 : 962.49 = 402.67 : x
  2. Step 2: Convert to fraction form
    697.57/962.49 = 402.67/x
  3. Step 3: Cross multiply
    697.57x = 962.49 × 402.67
  4. Step 4: Simplify right side
    697.57x = 387,565.85
  5. Step 5: Solve for x
    x = 387,565.85/697.57
  6. Step 6: Final answer
    x = 555.59

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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.