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Finding the Fourth Proportional to 795.90, 1,099.53 and 629.58

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Solution

The fourth proportional to 795.90, 1,099.53 and 629.58 is: 869.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.90 : 1,099.53 = 629.58 : x
  2. Step 2: Convert to fraction form
    795.90/1,099.53 = 629.58/x
  3. Step 3: Cross multiply
    795.90x = 1,099.53 × 629.58
  4. Step 4: Simplify right side
    795.90x = 692,242.10
  5. Step 5: Solve for x
    x = 692,242.10/795.90
  6. Step 6: Final answer
    x = 869.76

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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.