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Finding the Fourth Proportional to 697.95, 961.88 and 522.99

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Solution

The fourth proportional to 697.95, 961.88 and 522.99 is: 720.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.95 : 961.88 = 522.99 : x
  2. Step 2: Convert to fraction form
    697.95/961.88 = 522.99/x
  3. Step 3: Cross multiply
    697.95x = 961.88 × 522.99
  4. Step 4: Simplify right side
    697.95x = 503,051.01
  5. Step 5: Solve for x
    x = 503,051.01/697.95
  6. Step 6: Final answer
    x = 720.76

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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.