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Finding the Fourth Proportional to 1,663.96, 2,495.98 and 623.77

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Solution

The fourth proportional to 1,663.96, 2,495.98 and 623.77 is: 935.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663.96 : 2,495.98 = 623.77 : x
  2. Step 2: Convert to fraction form
    1,663.96/2,495.98 = 623.77/x
  3. Step 3: Cross multiply
    1,663.96x = 2,495.98 × 623.77
  4. Step 4: Simplify right side
    1,663.96x = 1,556,909.35
  5. Step 5: Solve for x
    x = 1,556,909.35/1,663.96
  6. Step 6: Final answer
    x = 935.67

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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.