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Finding the Fourth Proportional to 746.66, 1,030.10 and 550.64

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Solution

The fourth proportional to 746.66, 1,030.10 and 550.64 is: 759.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.66 : 1,030.10 = 550.64 : x
  2. Step 2: Convert to fraction form
    746.66/1,030.10 = 550.64/x
  3. Step 3: Cross multiply
    746.66x = 1,030.10 × 550.64
  4. Step 4: Simplify right side
    746.66x = 567,214.26
  5. Step 5: Solve for x
    x = 567,214.26/746.66
  6. Step 6: Final answer
    x = 759.67

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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.