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Finding the Fourth Proportional to 751.87, 1,124.10 and 637.59

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Solution

The fourth proportional to 751.87, 1,124.10 and 637.59 is: 953.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.87 : 1,124.10 = 637.59 : x
  2. Step 2: Convert to fraction form
    751.87/1,124.10 = 637.59/x
  3. Step 3: Cross multiply
    751.87x = 1,124.10 × 637.59
  4. Step 4: Simplify right side
    751.87x = 716,714.92
  5. Step 5: Solve for x
    x = 716,714.92/751.87
  6. Step 6: Final answer
    x = 953.24

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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.