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Finding the Fourth Proportional to 745.99, 1,030.45 and 622.06

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Solution

The fourth proportional to 745.99, 1,030.45 and 622.06 is: 859.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.99 : 1,030.45 = 622.06 : x
  2. Step 2: Convert to fraction form
    745.99/1,030.45 = 622.06/x
  3. Step 3: Cross multiply
    745.99x = 1,030.45 × 622.06
  4. Step 4: Simplify right side
    745.99x = 641,001.73
  5. Step 5: Solve for x
    x = 641,001.73/745.99
  6. Step 6: Final answer
    x = 859.26

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1.5x scale

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.