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Finding the Fourth Proportional to 697.22, 1,044.92 and 623.66

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Solution

The fourth proportional to 697.22, 1,044.92 and 623.66 is: 934.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.22 : 1,044.92 = 623.66 : x
  2. Step 2: Convert to fraction form
    697.22/1,044.92 = 623.66/x
  3. Step 3: Cross multiply
    697.22x = 1,044.92 × 623.66
  4. Step 4: Simplify right side
    697.22x = 651,666.46
  5. Step 5: Solve for x
    x = 651,666.46/697.22
  6. Step 6: Final answer
    x = 934.67

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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.