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Finding the Fourth Proportional to 953.37, 1,315.44 and 743.31

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Solution

The fourth proportional to 953.37, 1,315.44 and 743.31 is: 1,025.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.37 : 1,315.44 = 743.31 : x
  2. Step 2: Convert to fraction form
    953.37/1,315.44 = 743.31/x
  3. Step 3: Cross multiply
    953.37x = 1,315.44 × 743.31
  4. Step 4: Simplify right side
    953.37x = 977,779.71
  5. Step 5: Solve for x
    x = 977,779.71/953.37
  6. Step 6: Final answer
    x = 1,025.60

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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.