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Finding the Fourth Proportional to 750.51, 1,124.55 and 629.01

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Solution

The fourth proportional to 750.51, 1,124.55 and 629.01 is: 942.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.51 : 1,124.55 = 629.01 : x
  2. Step 2: Convert to fraction form
    750.51/1,124.55 = 629.01/x
  3. Step 3: Cross multiply
    750.51x = 1,124.55 × 629.01
  4. Step 4: Simplify right side
    750.51x = 707,353.20
  5. Step 5: Solve for x
    x = 707,353.20/750.51
  6. Step 6: Final answer
    x = 942.50

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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.